Question

A man spends Rs.1800 per month and saves 25% of his income. then what his monthly income?

Answer 1

let the monthly income be 'x'
percentage he saves=25%
percentage he spends=100%-25%= 75%

a.t.p.
75%x=1800
3/4x=1800
x=1800*4/3
x=600*4
x=2400

the monthly income of a man is Rs. 2400

Answer 2

Let his monthly income be Rs. x
income-money saved =money spent
x-25%of x=1800
75x/100=1800
75x=1800*100
x=(1800*100)/75
x=2400
so, his monthly income=Rs.2400