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In how many years a certain …

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In how many years a certain sum doubles itself at 4% per annum simple interest?

Posted by Apurba Gour 6 years, 6 months ago

CBSE > Class 08 > Mathematics

2 answers

Ganni Vineela 6 years, 6 months ago

Time =5 years

Gaurav Seth 6 years, 6 months ago

Take the help from the similar sum

Question:

In how much time will a sum of money double itself at 20% per annum simple interest ?

Answer:

Let principal be x
rate=20 %
amount =2x
simple interest =2x-x =x
SI = P*R*T/100
x= x*20*T/100
x= T x/5
5x = Tx
T = 5x/x
T= 5
Time = 5 years

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