Question

A man spends 10% of his income on food and 80% of the remaining income on clothing. If he still has a balance of 180rs, what is his total income?

Answer 1

total income = 100/80+10 X 180

                     = 100/90 X 180

                     = 100/1 X 20

                      = 2000

Answer 2

let his total income be x
now,
10% + 80%+180=x
10÷100+80÷100+180=x
1÷10+8÷10+180=x
9÷10+180=x
9÷10=x-180
9=10(x-180)
solve the equation now