Question

Find the per cent p.a. at which Rs. 1,000 amounts to Rs. 1,600 in 12 years.

Answer 1

p=1000
a=1600
si=1600-1000
=600
si=prt/100
=600=1000×r×12/100
=600=12000r/100
=600=120r=600/120=r
r=5%
hope it helps you. pls mark my answer as brainliest if it helps you

Answer 2

☆Hello friend☆

A=P(1+r/100)^n
Rs 1600/1000=(1+r/100)^12
$\sqrt[12]{ \frac{1600}{1000} } = 1 + \frac{r}{100}$
480/379.5=1+r/100
4800/3795= 1+r/100
960/759=1+r/100
320/253=1+r/100
(320-253)/253=r/100
67/253 ×100=r
26.5%=r

If simple interest
A-P=PRT/100
1600-1000= 1000×r/100×12
600=120r
600/120=r
5%=r

First I did in case of compound interest but when I saw ablove answer, the I thought that you may be asking for simple interest so I edited and gave in both.


Hope it helps☺☺☺