Question

At what time will the sum rs. 1200 amounts to rs. 1500 at $6\frac{1}{2}\%$ per annum.

Answer 1

T=?, P=1200, A=1500, R=13/2%

$SI=A-P$

$=1500-1200=300$

$SI=\frac{P\times R\times T}{100}$

$300=\frac{1200}{100}\times \frac{13}{2}\times T$

$\frac{300}{6\times 13}=T$

$T=\frac{50}{13}yrs$