Question

a certain sum of money amount to Rs678 in 2 years and to Rs 736.50 in 3 1/2 years. what is the principal?​

Answer 1

Solution :

A=P(1+RT100)

678=P(1+R⋅2100)−(1)

736.5=P(1+R⋅(72)100)−(2)

dividing equation 1 and 2

678736.5=1+2R1001+R100

solving this

R=6.5%

Answer 2

Dude this is maths
First think and then ask