Question

A number, when 35 is subtracted from it, reduces to its 80 percent. What is four - fifth of that number ?

Answer 1

10 is the answer as per the qiestion

Answer 2

let the number be x

A.t.q,

x-35 = 80/100x
x = 80/100x + 35
x-80/100x = 35
5x-4x / 5 = 35
x/5 = 35
x = 175

Proof....

175-35 = 80/100 × 175
140 = 0.8×175
140 = 140

Therefore , the number is 175

4/5 × 175 = 140