Question

The salary of a person was increased by15% if his salary now is 9936 what was his initial salary.

Answer 1

Let the initial money be x.
A/q,
x+15% of x=9936
x+15/100 of x=9936
x+3x/20=9936
23x/20=9936
x=9936×20/23
=8640
Hope it hlps:)

Answer 2

let his initial salary was = rs x
increased amount of salary = 15% of rs x
= rs 15/100×x

present salary = initial salary + increased salary
= rs x + rs 15x/100
= rs 100x + rs 15x/ 100
= rs 115/100

present salary = rs 9936
115x/100 = 9936
x = 9936×100/115
x = 432×20
= rs 8640

therefore ,initial salary was = rs 8640