[3 marks sum]

Question 13 Marks

A sum of money invested at $6 \%$ p.a. simple interest for a certain period of time yields $₹ 960$ as interest. If this sum had been invested for 5 years more, it would have yielded $₹ 2160$ as interest. Find the sum.

Answer

₹ 4000

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Question 23 Marks

In what time will a sum of money lent at $8 \frac{1}{3} \%$ simple interest become 4 times of itself.

Answer

36 years

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Question 33 Marks

Two equal sums of money were lent at simple interest at $11 \%$ p.a. for $3 \frac{1}{2}$ years and $4 \frac{1}{2}$ years respectively. If the difference in interests for two periods was ₹ 412.50 , find each sum.

Answer

₹ 3750

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Question 43 Marks

If ₹ 1250 amount to ₹ 1550 in 3 years at simple interest, what will ₹ 3200 amount to in 4 years at the same rate?

Answer

₹ 4224

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Question 53 Marks

What sum of money lent at $12 \frac{1}{2} \%$ per annum will produce the same interest in 4 years as ₹ 8560 produces in 5 years at $12 \%$ per annum?

Answer

₹ 10272