A sum of money at compound interest becomes 3 times in 6 years. How many years will it take to become 27 times? MCQ with Answer and Explanation

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A sum of money at compound interest becomes 3 times in 6 years. How many years will it take to become 27 times?

A. 18 years

B. 24 years

C. 12 years

D. 15 years

Answer: Option A

Solution (By JKSSB Mock Tests)

3^3=27. Since 3 times in 6 years, 27 times = 3 intervals = 18 years.

This question belongs to: Maths Percentage

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Question #1

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Difference between 56% and 34% of a number is 132. The number is:

A. 650

B. 600

C. 500

D. 550

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Correct Answer: Option B

Explanation:
22% of number = 132 → number = 132/0.22 = 600.

This question belongs to: Maths Percentage

Question #2

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In 80 L mixture, milk:water = 5:3. Water added to make ratio 1:2:

A. 90 L

B. 80 L

C. 60 L

D. 70 L

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Correct Answer: Option D

Explanation:
Milk=50 L, water=30 L. For milk:water = 1:2, water needed=100 L, add 70 L.

This question belongs to: Maths Percentage

Question #3

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Candidate got 35% of valid votes and lost by 2100. 20% votes invalid. Total voters:

A. 8000

B. 10000

C. 8750

D. 9000

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Correct Answer: Option C

Explanation:
Valid votes V, winner 65%V, loser 35%V, margin 30%V=2100 → V=7000. Total T, 0.8T=7000 → T=8750.

This question belongs to: Maths Percentage

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