Compound Interest Test 16
Bilingual timed test with proper DI visuals, clean Hindi and detailed solutions.
Compound Interest Test 16
25 bilingual MCQs from Compound Interest, including 5 fresh LearnAtMyPlace original supplemental questions with detailed solutions. Graph questions render as proper visual charts with preserved Hindi, ₹, ×, %, ratios and equations.
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- Compound Interest — Variable rate CI
1. Indore branch invests ₹15,000 for two years at variable compound rates 11% and 6%. Find total CI. / Indore शाखा ने ₹15,000 को दो वर्षों के लिए 11% और 6% की परिवर्तनीय चक्रवृद्धि दरों पर निवेश किया। कुल CI ज्ञात करें।
- A. ₹2,649 (Correct)
- B. ₹2,550
- C. ₹2,849
- D. ₹2,449
Explanation: Amount = P(1+11/100)(1+6/100). CI = ₹2,649. / राशि = P(1+11/100)(1+6/100)। CI = ₹2,649।
- Compound Interest — Excess CI
2. At 12% p.a. for 2 years, find the excess of compound interest over simple interest on ₹22,000. (Set 302) / ₹22,000 पर 12% वार्षिक दर से 2 वर्ष में CI का SI से अधिक भाग ज्ञात करें। (सेट 302)
- A. ₹266.80
- B. ₹316.80 (Correct)
- C. ₹366.80
- D. ₹5,280
Explanation: Excess = P(r/100)^2 = 22000×(12/100)^2 = ₹316.80. / अधिकता = P(r/100)^2 = 22000×(12/100)^2 = ₹316.80।
- Compound Interest — Quarterly compounding
3. Find CI on ₹15,000 at 12% p.a. for one year compounded quarterly. (Set 303) / ₹15,000 पर 12% वार्षिक दर से 1 वर्ष का CI ज्ञात करें, जब ब्याज त्रैमासिक संयोजित हो। (सेट 303)
- A. ₹1,800
- B. ₹1,942.63
- C. ₹1,822.63
- D. ₹1,882.63 (Correct)
Explanation: Quarterly rate = 3%, periods = 4. CI = 15000[(1.03)^4−1] = ₹1,882.63. / त्रैमासिक दर = 3%, अवधियाँ = 4। CI = 15000[(1.03)^4−1] = ₹1,882.63।
- Compound Interest — Three-year amount
4. The amount after 3 years on ₹10,000 at 10% annual compounding is: (Set 304) / ₹10,000 पर 10% वार्षिक चक्रवृद्धि से 3 वर्ष बाद राशि होगी: (सेट 304)
- A. ₹13,410
- B. ₹13,210
- C. ₹13,310 (Correct)
- D. ₹13,000
Explanation: Amount = 10000×1.1^3 = ₹13,310. / राशि = 10000×1.1^3 = ₹13,310।
- Compound Interest — Principal from CI amount
5. A sum amounts to ₹24,200 in 2 years at 10% compound interest. Find the principal. (Set 305) / एक राशि 10% चक्रवृद्धि ब्याज पर 2 वर्ष में ₹24,200 हो जाती है। मूलधन ज्ञात करें। (सेट 305)
- A. ₹20,000 (Correct)
- B. ₹20,166.67
- C. ₹19,500
- D. ₹20,500
Explanation: P = A/(1.1)^2 = ₹24,200/1.21 = ₹20,000. / P = A/(1.1)^2 = ₹24,200/1.21 = ₹20,000।
- Compound Interest — Net CI
6. A deposit earns CI at 15% for 2 years on ₹21,000. If ₹150 service charge is deducted from interest, what net interest remains? / ₹21,000 जमा पर 15% से 2 वर्ष का CI मिलता है। यदि ब्याज से ₹150 सेवा शुल्क कटता है, तो शुद्ध ब्याज कितना बचेगा?
- A. ₹6,772.50
- B. ₹6,622.50 (Correct)
- C. ₹6,722.50
- D. ₹6,522.50
Explanation: CI = ₹6,772.50. Net interest = ₹6,772.50−₹150 = ₹6,622.50. / CI = ₹6,772.50। शुद्ध ब्याज = ₹6,772.50−₹150 = ₹6,622.50।
- Compound Interest — Compound amount vs SI amount
7. For ₹28,000 at 10% for 2 years, by how much is compound amount greater than simple interest amount? (Set 307) / ₹28,000 पर 10% से 2 वर्ष के लिए चक्रवृद्धि राशि साधारण ब्याज राशि से कितनी अधिक है? (सेट 307)
- A. ₹280 (Correct)
- B. ₹380
- C. ₹294
- D. ₹180
Explanation: Compound amount − Simple amount = CI − SI = P(r/100)^2 = ₹280. / चक्रवृद्धि राशि − साधारण राशि = CI − SI = P(r/100)^2 = ₹280।
- Compound Interest — Half-yearly two years
8. Calculate CI on ₹21,000 for 2 years at 20% p.a. compounded half-yearly. (Set 308) / ₹21,000 पर 20% वार्षिक दर से 2 वर्ष का CI ज्ञात करें, जब ब्याज अर्धवार्षिक संयोजित हो। (सेट 308)
- A. ₹9,946.10
- B. ₹9,546.10
- C. ₹9,746.10 (Correct)
- D. ₹8,400
Explanation: Half-yearly rate = 10%, periods = 4. CI = 21000[(1.10)^4−1] = ₹9,746.10. / अर्धवार्षिक दर = 10%, अवधियाँ = 4। CI = 21000[(1.10)^4−1] = ₹9,746.10।
- Compound Interest — Growth model
9. A savings balance of ₹25,000 grows by 13% compound rate each year. What is the balance after 2 years? (Set 309) / ₹25,000 की बचत राशि प्रति वर्ष 13% चक्रवृद्धि दर से बढ़ती है। 2 वर्ष बाद शेष राशि कितनी होगी? (सेट 309)
- A. ₹32,022.50
- B. ₹31,822.50
- C. ₹31,500
- D. ₹31,922.50 (Correct)
Explanation: Balance = 25000(1+13/100)^2 = ₹31,922.50. / शेष राशि = 25000(1+13/100)^2 = ₹31,922.50।
- Compound Interest — Three-year CI
10. Find the compound interest on ₹18,000 at 5% per annum for 3 years. (Set 310) / ₹18,000 पर 5% वार्षिक दर से 3 वर्ष का चक्रवृद्धि ब्याज ज्ञात करें। (सेट 310)
- A. ₹2,987.25
- B. ₹2,700
- C. ₹2,687.25
- D. ₹2,837.25 (Correct)
Explanation: CI = P[(1+r/100)^3−1] = ₹2,837.25. / CI = P[(1+r/100)^3−1] = ₹2,837.25।
- Compound Interest — Variable rate CI
11. Agra branch invests ₹18,000 for two years at variable compound rates 12% and 8%. Find total CI. / Agra शाखा ने ₹18,000 को दो वर्षों के लिए 12% और 8% की परिवर्तनीय चक्रवृद्धि दरों पर निवेश किया। कुल CI ज्ञात करें।
- A. ₹3,572.80
- B. ₹3,772.80 (Correct)
- C. ₹3,600
- D. ₹3,972.80
Explanation: Amount = P(1+12/100)(1+8/100). CI = ₹3,772.80. / राशि = P(1+12/100)(1+8/100)। CI = ₹3,772.80।
- Compound Interest — Excess CI
12. At 12% p.a. for 2 years, find the excess of compound interest over simple interest on ₹20,000. (Set 312) / ₹20,000 पर 12% वार्षिक दर से 2 वर्ष में CI का SI से अधिक भाग ज्ञात करें। (सेट 312)
- A. ₹288 (Correct)
- B. ₹4,800
- C. ₹238
- D. ₹338
Explanation: Excess = P(r/100)^2 = 20000×(12/100)^2 = ₹288. / अधिकता = P(r/100)^2 = 20000×(12/100)^2 = ₹288।
- Compound Interest — Quarterly compounding
13. Find CI on ₹15,000 at 12% p.a. for one year compounded quarterly. (Set 313) / ₹15,000 पर 12% वार्षिक दर से 1 वर्ष का CI ज्ञात करें, जब ब्याज त्रैमासिक संयोजित हो। (सेट 313)
- A. ₹1,882.63 (Correct)
- B. ₹1,822.63
- C. ₹1,942.63
- D. ₹1,800
Explanation: Quarterly rate = 3%, periods = 4. CI = 15000[(1.03)^4−1] = ₹1,882.63. / त्रैमासिक दर = 3%, अवधियाँ = 4। CI = 15000[(1.03)^4−1] = ₹1,882.63।
- Compound Interest — Three-year amount
14. The amount after 3 years on ₹12,000 at 10% annual compounding is: (Set 314) / ₹12,000 पर 10% वार्षिक चक्रवृद्धि से 3 वर्ष बाद राशि होगी: (सेट 314)
- A. ₹16,072
- B. ₹15,972 (Correct)
- C. ₹15,872
- D. ₹15,600
Explanation: Amount = 12000×1.1^3 = ₹15,972. / राशि = 12000×1.1^3 = ₹15,972।
- Compound Interest — Principal from CI amount
15. A sum amounts to ₹24,200 in 2 years at 10% compound interest. Find the principal. (Set 315) / एक राशि 10% चक्रवृद्धि ब्याज पर 2 वर्ष में ₹24,200 हो जाती है। मूलधन ज्ञात करें। (सेट 315)
- A. ₹20,000 (Correct)
- B. ₹20,500
- C. ₹19,500
- D. ₹20,166.67
Explanation: P = A/(1.1)^2 = ₹24,200/1.21 = ₹20,000. / P = A/(1.1)^2 = ₹24,200/1.21 = ₹20,000।
- Compound Interest — Net CI
16. A deposit earns CI at 15% for 2 years on ₹17,000. If ₹200 service charge is deducted from interest, what net interest remains? / ₹17,000 जमा पर 15% से 2 वर्ष का CI मिलता है। यदि ब्याज से ₹200 सेवा शुल्क कटता है, तो शुद्ध ब्याज कितना बचेगा?
- A. ₹5,382.50
- B. ₹5,482.50
- C. ₹5,182.50
- D. ₹5,282.50 (Correct)
Explanation: CI = ₹5,482.50. Net interest = ₹5,482.50−₹200 = ₹5,282.50. / CI = ₹5,482.50। शुद्ध ब्याज = ₹5,482.50−₹200 = ₹5,282.50।
- Compound Interest — Compound amount vs SI amount
17. For ₹26,000 at 10% for 2 years, by how much is compound amount greater than simple interest amount? (Set 317) / ₹26,000 पर 10% से 2 वर्ष के लिए चक्रवृद्धि राशि साधारण ब्याज राशि से कितनी अधिक है? (सेट 317)
- A. ₹160
- B. ₹360
- C. ₹260 (Correct)
- D. ₹273
Explanation: Compound amount − Simple amount = CI − SI = P(r/100)^2 = ₹260. / चक्रवृद्धि राशि − साधारण राशि = CI − SI = P(r/100)^2 = ₹260।
- Compound Interest — Half-yearly two years
18. Calculate CI on ₹21,000 for 2 years at 20% p.a. compounded half-yearly. (Set 318) / ₹21,000 पर 20% वार्षिक दर से 2 वर्ष का CI ज्ञात करें, जब ब्याज अर्धवार्षिक संयोजित हो। (सेट 318)
- A. ₹9,546.10
- B. ₹9,946.10
- C. ₹8,400
- D. ₹9,746.10 (Correct)
Explanation: Half-yearly rate = 10%, periods = 4. CI = 21000[(1.10)^4−1] = ₹9,746.10. / अर्धवार्षिक दर = 10%, अवधियाँ = 4। CI = 21000[(1.10)^4−1] = ₹9,746.10।
- Compound Interest — Growth model
19. A savings balance of ₹23,000 grows by 11% compound rate each year. What is the balance after 2 years? (Set 319) / ₹23,000 की बचत राशि प्रति वर्ष 11% चक्रवृद्धि दर से बढ़ती है। 2 वर्ष बाद शेष राशि कितनी होगी? (सेट 319)
- A. ₹28,438.30
- B. ₹28,238.30
- C. ₹28,338.30 (Correct)
- D. ₹28,060
Explanation: Balance = 23000(1+11/100)^2 = ₹28,338.30. / शेष राशि = 23000(1+11/100)^2 = ₹28,338.30।
- Compound Interest — Three-year CI
20. Find the compound interest on ₹19,000 at 5% per annum for 3 years. (Set 320) / ₹19,000 पर 5% वार्षिक दर से 3 वर्ष का चक्रवृद्धि ब्याज ज्ञात करें। (सेट 320)
- A. ₹2,850
- B. ₹2,994.88 (Correct)
- C. ₹3,144.88
- D. ₹2,844.88
Explanation: CI = P[(1+r/100)^3−1] = ₹2,994.88. / CI = P[(1+r/100)^3−1] = ₹2,994.88।
- Compound Interest — Percentage / प्रतिशत
21. 25% of 800 is: / 800 का 25% कितना है?
- A. 190
- B. 200 (Correct)
- C. 210
- D. 220
Explanation: 25% = 25/100, so answer = 200. / प्रतिशत को 100 से भाग देकर मूल संख्या से गुणा करें।
- Compound Interest — Profit-Loss / लाभ-हानि
22. An article bought for Rs 850 is sold at 12.5% profit. Find SP. / Rs 850 में खरीदी वस्तु 12.5% लाभ पर बेची गई। SP ज्ञात करें।
- A. Rs 916
- B. Rs 956 (Correct)
- C. Rs 996
- D. Rs 1036
Explanation: SP = CP x (100 + profit%)/100 = 850 x 112.5/100 = Rs 956. / लाभ प्रतिशत जोड़कर विक्रय मूल्य निकालें।
- Compound Interest — Time & Work / समय और कार्य
23. A finishes a work in 15 days and B in 21 days. Together they finish in: / A 15 दिन और B 21 दिन में काम पूरा करते हैं। साथ में समय?
- A. 7.800000000000001 days
- B. 8.8 days (Correct)
- C. 9.8 days
- D. 10.8 days
Explanation: Combined time = ab/(a+b) = 15 x 21 / 36 = 8.8 days. / संयुक्त कार्य में दरें जोड़ी जाती हैं।
- Compound Interest — Speed Conversion / चाल परिवर्तन
24. 108 km/h equals: / 108 किमी/घंटा बराबर है:
- A. 27 m/s
- B. 30 m/s (Correct)
- C. 33 m/s
- D. 35 m/s
Explanation: km/h to m/s conversion uses x 5/18. 108 x 5/18 = 30. / किमी/घंटा को मी/से में बदलने के लिए 5/18 से गुणा करें।
- Compound Interest — Simplification / सरलीकरण
25. Simplify: 24 x 14 + 24 - 14. / सरल करें: 24 x 14 + 24 - 14.
- A. 338
- B. 346 (Correct)
- C. 354
- D. 362
Explanation: Apply BODMAS: 336 + 24 - 14 = 346. / पहले गुणा, फिर जोड़-घटाव करें।