Question

The ratio of the income and saving of a family is 8:3. Find the expenditure if the saving is Rs.1332.Please explain

Answer 1

$ratio \: of \: income \: and \: saving \: = \frac{8}{3} \\ savings \: = \: 1332 \\ let \: expenditure \: be \: x\: \\ so \: income \: = x + 1332 \\ \frac{8}{3} = \frac{x + 1332}{1332} \\ 10656 = 3x + 3996 \\ 3x = 10656 - 3996 \\ 3x = 6660 \\ x = 2220$
So expenditure = 2220