Question

Interest on a sum of money at the end of 5 year is 4 by 5 of the sum itself find the rate percent per annum

Answer 1

let principal be P

time = 5 year

simple interest = 4/5p

P×R×T/100 = 4/5p

= P×R×5/100 = 4/5p

R = 4/5 × 100/5

= 16%

Answer 2

Hello Friend..❤️❤️

Ans

-----

Let,

Principal = P

Time = 5 years

Simple interest = 4/5 P

$\frac{p \times r \times t}{100} = \frac{4}{5} p$

R = 4/5 × 100/5

=16%

so

required answer is 16

Thank you..☺️☺️