Question

in how many time an amount will become doubble at the rate of 7.5% if evaluate compoundly​

Answer 1

A=2p.

R=7.5%

By formula

A=p (1+R)^n

2p=p (1+0.075)^n

2=(1.075)^n

round off now

2=(2)^n

n=1 years.

Hope it will help you. ..

Answer 2

Answer:

This question is base on rules of 72 on compound interest.

so ,

It's formula , that is ;

Time=72/interest rate

Time=72/7.5

=720/75

=9.6

So , 9 years 6 months time an amount will become doubble at the rate of 7.5% if evaluate compoundly.

Bhai ye aapka wala mal nai hai.