A man spends 2/5 of his salary on house rent, 3/10 of his salary on food and 1/8 of his salary on conveyance. If he has rs:1400 left with him, find his expenditure on food?
Let the salary be x
The difference bw his salary and expenditure is 1400.
x - ( 2x/5 + 3x/10 + x/8) = 1400
x - (33x/40)= 1400
7x/40 = 1400
x = 8000
Expenditure for food = 8000 × 3/10