Question

A sum of Rs 800 to Rs 920 in 3yr ​

Answer 1

Answer:

if a person want to increase stamina from 800 rupees 920 rupees in 3 years then,

each year the person have to increase their money by 40 rs.

Answer 2

Answer:

p=800

a=920

s.i=920-800=120

r%=120×100/800×3=5%