SSC CGL Ratio and Average Practice Test 2
15 additional ratio and average questions on partnership, weighted averages, ages, and proportion logic.
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SSC CGL Ratio and Average Practice Test 2
15 additional ratio and average questions on partnership, weighted averages, ages, and proportion logic.
Preview all 14 questions in SSC CGL Ratio and Average Practice Test 2 (no login required)
- Ratio
1. Simplify the ratio 18:24
- A. 2:3
- B. 3:4 (Correct)
- C. 4:5
- D. 5:6
Explanation: Divide both terms by 6.
- Proportion
2. If 4:5 = x:20, then x =
- A. 12
- B. 14
- C. 16 (Correct)
- D. 18
Explanation: x = 20 x 4/5 = 16.
- Average
3. If the average of 5 numbers is 12, their total is:
- A. 48
- B. 50
- C. 60 (Correct)
- D. 72
Explanation: Total = average x number of terms = 12 x 5.
- Ages
4. Present ages of A and B are in ratio 3:5. If A is 18, then B is:
- A. 24
- B. 28
- C. 30 (Correct)
- D. 32
Explanation: 1 part = 6, so B = 5 x 6 = 30.
- Partnership
5. A and B invest in ratio 2:3. Profit is 5000. B's share is:
- A. 2000
- B. 2500
- C. 3000 (Correct)
- D. 3500
Explanation: B gets 3/5 of 5000 = 3000.
- Mixture
6. Rice and wheat are mixed in ratio 2:3. In 25 kg mixture, wheat is:
- A. 10 kg
- B. 12 kg
- C. 15 kg (Correct)
- D. 18 kg
Explanation: Wheat = 3/5 of 25 = 15 kg.
- Average
7. Average of first 6 natural numbers is:
- A. 3
- B. 3.5 (Correct)
- C. 4
- D. 4.5
Explanation: Sum 1 to 6 = 21, average = 21/6 = 3.5.
- Ratio
8. If boys:girls = 7:5 and total students are 48, number of girls is:
- A. 18
- B. 20 (Correct)
- C. 22
- D. 24
Explanation: Total parts = 12, one part = 4, girls = 5 x 4 = 20.
- Weighted Average
9. Average of 8 numbers is 14. If one more number 22 is included, new average is:
- A. 14
- B. 14 8/9 (Correct)
- C. 15
- D. 15 1/2
Explanation: Original total = 112, new total = 134, new average = 134/9 = 14 8/9.
- Ages
10. Average age of 4 friends is 20 years. Total age is:
- A. 60
- B. 70
- C. 80 (Correct)
- D. 90
Explanation: Total age = 20 x 4 = 80.
- Average
11. One number is removed from 5, 7, 9, 11, 13 and average becomes 9. Removed number is:
- A. 5
- B. 7
- C. 9 (Correct)
- D. 11
Explanation: Original sum = 45. New total for 4 numbers = 36, so removed number = 9.
- Proportion
12. If x:y = 2:7 and x = 8, then y =
- A. 14
- B. 20
- C. 24
- D. 28 (Correct)
Explanation: Scale factor is 4, so y = 7 x 4 = 28.
- Ratio
13. The ratio 0.6:1.2 simplifies to:
- A. 1:2 (Correct)
- B. 2:1
- C. 3:4
- D. 4:5
Explanation: Divide both terms by 0.6.
- Average
14. Average of 11 numbers is 50. If average of first 6 is 48, average of remaining 5 is:
- A. 50.4
- B. 51.6
- C. 52.4 (Correct)
- D. 53.2
Explanation: Total = 550, first 6 total = 288, remaining total = 262, average = 262/5 = 52.4.