A sum of money becomes Rs. 2800 in 2 years and Rs. 3250 in 5 years at simple interest. Find the rate of interest. MCQ with Answer and Explanation

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A sum of money becomes Rs. 2800 in 2 years and Rs. 3250 in 5 years at simple interest. Find the rate of interest.

A. 5%

B. 6%

C. 7%

D. 4%

Answer: Option B

Solution (By JKSSB Mock Tests)

SI for 3 years = 3250 - 2800 = 450, SI per year = 150. Principal = 2800 - 2×150 = 2500. Rate = (150/2500)×100 = 6%.

This question belongs to: Maths Percentage

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Question #1

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A man's income is Rs. 12000, he saves 20%. His savings are:

A. 3000

B. 2600

C. 2400

D. 2000

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Correct Answer: Option C

Explanation:
20% of 12000 = 2400.

This question belongs to: Maths Percentage

Question #2

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Length of rectangle increased by 20%, breadth decreased by 15%. Percentage change in area:

A. 3% increase

B. 3% decrease

C. 2% decrease

D. 2% increase

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Correct Answer: Option D

Explanation:
1.2 × 0.85 = 1.02, 2% increase.

This question belongs to: Maths Percentage

Question #3

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In an election, 20% of the votes were invalid. A got 55% of valid votes and won by 2000 votes. Total votes polled:

A. 24000

B. 28000

C. 25000

D. 22000

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Correct Answer: Option C

Explanation:
Valid votes V, margin 0.1V=2000 → V=20000. Total T, 0.8T=20000 → T=25000.

This question belongs to: Maths Percentage

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