Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 9

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8th CBSE

IMPORTANT

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A man borrows $₹ 1500$ at $3 %$ p. a. and pays back $₹ 500$ after $3$ years. How much does she still owe including interest?

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Important Questions on Simple and Compound Interest

HARD

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 10

A man lends certain amount of money at

4 %

p. a. He also invests

₹ 1, 56, 500

at

4 \frac{1}{2} %

p. a. At the end of the year, the total interest is

₹ 1, 15, 750

. If the money lent at

4 %

p.a is

₹ k

, then find the value of

k

. Enter the answer without commas.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 11

Neha and priya borrowed

₹ 5400

and

₹ 6000

respectively, at the same rate of interest for

1 \frac{3}{5}

years. If Priya paid

₹ 240

more than Neha, then find the rate of interest.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 12

The simple interest on a sum of money is

\frac{1}{16}

of the principal and the number of years is equal to the rate of interest p.a. Find the rate of interest and express it in mixed fraction.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 13

A man borrows

₹ 2000

from his friend at

5 %

p.a. simple interest for

2

years. What amount should he return after

2

years.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 14

The simple interest on a certain sum of money for

3 \frac{1}{4}

years at

4 \frac{1}{2} %

p. a. is more than that on the same sum for

2

years at

5 %

by

₹ 1221

. If the sum is

₹ k

, find the value of

k

.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 15

At what rate percent of interest will a sum of money become six times itself in

15

years? Express the rate of interest in mixed fraction.

MEDIUM

8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Exercise>Q 16

Seema wants to invest

₹ 5400

into two parts such that the interest on the first part for

4

years at

5 %

p. a. is equal to the interest on the second part for two years at

15 %

p. a. Find the amount invested in both the parts.

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8th CBSE

IMPORTANT

Joy Of Mathematics 8>Chapter 10 - Simple and Compound Interest>Try This>Q 1

Using compound interest formula, calculate the amount for

P = ₹ 2500, R = 3 %

p.a. and

T = 2

Years.