Question

how much time will a sum of money double itself it if invested at 8% simple interest per annum​

Answer 1

Answer:

Step-by-step explanation:

let P=x then according to the question the S.I. will also be x

using S.I. formula  

S.I.=P×R×T/100

x=x × 8×T/100

8T=100

T=100/8=25/2 year

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Answer 2

Answer:

Let sum of money=Rs. x

Therefore amount=Rs. 2x

Interest=sum∗time∗R/100

=x∗time∗8/100

=8x∗time/100

Amount=sum+interest

2x=x+8x∗time/100

2x=100x+8x∗time/100

200x=100x+8x∗time

100x=8x∗time

time=100x.

time=12.5years.

Step-by-step explanation:

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