New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 11

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How long will it take $₹ 10$ $0$ to triple itself at $5 %$ simple interest?

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Important Questions on Percentage and its Applications

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IMPORTANT

New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 12

₹ 7000

left in a bank for

10

years at simple interest amounts to

₹ 9800

. Then, the total amount after another

5

years at the same rate is

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IMPORTANT

New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 1

A sum amounts to

₹ 1326

in

6

years at

5

%

p.a. simple interest. In what time will this sum double itself at the same rate of interest?

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New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 2

If

₹ 450

amounts to

₹ 540

at

4

years at simple interest, find the sum that will amount to

₹ 637.50

in

5

years at the same rate of interest.

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IMPORTANT

New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 3

Sameer lent equal sums of money at

5 \frac{1}{2}

percent and

4

percent per annum respectively for a period of

3

years. If he earned

₹ 72

more for the money lent out at

5 \frac{1}{2} %

, if the sum of money is

₹ k

, then, find the value of

k

lent at

4 % .

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New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 4

Two equal sums were lent out at

7

%

and

5 %

interest respectively. The interests earned on the two loans add up to

₹ 960

for

4

years. What is the total sum lent out?

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New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 5

A sum lent out at simple interest becomes

₹ 4480

in

3

years and

₹ 4800

in

5

years. Find the sum and the rate of interest.

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IMPORTANT

New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 6

Amar and Chaman borrowed

₹ 2250

and

₹ 2500

respectively at the same rate of simple interest for

3 \frac{1}{2}

years. If Chaman paid

₹ 140

more interest than Amar, find the rate of interest per annum.

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IMPORTANT

New Mathematics Today Class 7>Chapter 9 - Percentage and its Applications>Exercise>Q 7

Divide

₹ 2500

into two parts such that the simple interest on one at

4 %

for

5

years is double that of the other at

5 %

for

3

years.