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Practice Test 7
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SSC CGL Ratio, Proportion and Average Verified Practice Test 7

15 structurally validated Ratio, Proportion and Average questions with unique options, mapped answers and explanations.

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SSC CGL Practice Session

SSC CGL Ratio, Proportion and Average Verified Practice Test 7

15 structurally validated Ratio, Proportion and Average questions with unique options, mapped answers and explanations.

Questions
15
Marking
+2 correct, -0.5 wrong
Format
15-question practice session
Preview all 15 questions in SSC CGL Ratio, Proportion and Average Verified Practice Test 7 (no login required)
  1. Combined Ratio

    1. If A:B = 3:4 and B:C = 2:5, then A:B:C =

    • A. 3:4:5
    • B. 6:8:20 (Correct)
    • C. 6:8:10
    • D. 3:2:5

    Explanation: Make B common: 3:4 and 4:10 become 6:8:20? Actually scale first ratio by 2 gives 6:8 and second by 4 gives 8:20.

  2. Average

    2. Average of first 8 natural numbers is:

    • A. 4
    • B. 4.5 (Correct)
    • C. 5
    • D. 5.5

    Explanation: Average of first n natural numbers is (n+1)/2.

  3. Partnership

    3. A and B invest in the ratio 4:1. Out of Rs. 500 profit, A gets:

    • A. Rs. 300
    • B. Rs. 350
    • C. Rs. 400 (Correct)
    • D. Rs. 450

    Explanation: A gets 4/5 of the total profit.

  4. Average Change

    4. Average of 5 numbers is 18. If one number 28 is removed, new average is:

    • A. 14
    • B. 15.5 (Correct)
    • C. 16
    • D. 16.5

    Explanation: Total = 90. Remaining total = 62. Divide by 4.

  5. Ratio

    5. If x:y = 5:7 and x = 25, then y =

    • A. 30
    • B. 35 (Correct)
    • C. 40
    • D. 45

    Explanation: One part = 5, so y = 35.

  6. Average

    6. Average of 6, 12, 18, 24 is:

    • A. 12
    • B. 14
    • C. 15 (Correct)
    • D. 16

    Explanation: Sum = 60, divide by 4.

  7. Combined Average

    7. Average of 2 numbers is 20 and average of 4 numbers is 15. Combined average is:

    • A. 16
    • B. 16.5
    • C. 16.67 (Correct)
    • D. 17

    Explanation: Total = 40 + 60 = 100, divide by 6 to get 16.67.

  8. Ratio Sharing

    8. A sum is shared in ratio 1:4. Larger share out of 250 is:

    • A. 180
    • B. 190
    • C. 200 (Correct)
    • D. 210

    Explanation: 4/5 of 250 = 200.

  9. Average Score

    9. A batsman scores 275 runs in 11 innings. Average score is:

    • A. 20
    • B. 22
    • C. 25 (Correct)
    • D. 27

    Explanation: 275/11 = 25.

  10. Ratio

    10. Divide ₹720 in the ratio 3:5. Larger share is:

    • A. ₹270
    • B. ₹360
    • C. ₹400
    • D. ₹450 (Correct)

    Explanation: Total parts=8. Larger share = 720×5/8 = 450.

  11. Average

    11. Average of 8, 14, 22, 30, 36 is:

    • A. 20
    • B. 21
    • C. 22 (Correct)
    • D. 23

    Explanation: Sum=110, 110÷5=22.

  12. Proportion

    12. If a:b = 2:3 and b:c = 4:5, find a:c.

    • A. 6:10
    • B. 8:15 (Correct)
    • C. 8:12
    • D. 10:15

    Explanation: a:b:c = 2:3 and b:c=4:5. Scale b: a:b=8:12, b:c=12:15. So a:c=8:15.

  13. Partnership

    13. A invests ₹5000 for 6 months and B invests ₹4000 for 9 months. Profit ratio is:

    • A. 5:6 (Correct)
    • B. 10:12
    • C. 10:9
    • D. 5:9

    Explanation: A: 5000×6=30000, B: 4000×9=36000. Ratio = 30:36 = 5:6.

  14. Average

    14. Average of 5 numbers is 18. If one number is removed, average becomes 15. Removed number is:

    • A. 28
    • B. 30 (Correct)
    • C. 33
    • D. 35

    Explanation: Sum of 5 = 90. Sum of 4 = 60. Removed = 30.

  15. Mixture

    15. In what ratio must water be mixed with milk costing ₹12/litre to get a mixture worth ₹10/litre?

    • A. 1:4
    • B. 1:5 (Correct)
    • C. 2:5
    • D. 1:6

    Explanation: By alligation: (12−10):(10−0) = 2:10 = 1:5. Water:Milk = 1:5.