Question

Four - fifths of a number is 20 less than the
original number. Find the ne
let the​

Answer 1

Given:

let the number be x.

(4/5)x=x-20

find x?

Solution:

⇒4x/5=x-20

⇒4x=(x-20)×5

⇒4x=5x-100

⇒5x-4x=100

⇒x=100

∴x=100