Question

A certain sum of money amount to Rs 756 in 2years and to Rs 873 in 3.5 years. find the sum and the rate of interest​

Answer 1

Step-by-step explanation:

Principal +3.5 yrs Interest=Rs 873

Principal +2 yrs Interest=Rs 756

(Suntract) 1.5yrs Interest=Rs117

So, 2yrs Interest=Rs( 117×2)/(1/5)=Rs156

So, sum=Rs(756-156)=Rs600

and rate of interest=(156×100)÷(600×2)=13 %