Question

In what time will Rs. 6400 amount to Rs. 7152 at the rate of 6% p.a?​

Answer 1

Amount of Interest=7152-6400=752=I

• Principal=6400=P
• Rate of interest=6%=R
• Time=T=?

We know

`\boxed{\sf I=(PRT)/(100)}`

`\\ \sf\longmapsto T=(PR)/(100I)`

`\\ \sf\longmapsto T=(6400(6))/(100(752))`

`\\ \sf\longmapsto T=(38400)/(75200)`

`\\ \sf\longmapsto T\approx 0.5year`

`\\ \sf\longmapsto T\approx 6months`