Question

Ram spend 20 % of his monthly salary on his household expenditure , 15% of the rest on books, 30% of rest on clothes and saves the rest. If he finally saved Rs. 9520 then his salary is.

Answer 1

Let Ram's income is 100
He spends on household $=20\%of100=\frac{20}{100}\times 100=Rs20$

Remaining income $=100-20=Rs.80$
Expenditure on books $=15\%of80=\frac{15}{100}\times 80=Rs.12$

Remaining income$=80-12=Rs.68$
Expenditure on clothes $=30\%of68=\frac{30}{100}\times 68=Rs.20.4$
Saving$=68-20.4=Rs.47.6$

If saving is 47.6 then income=100

If saving is Rs.9520 then income$=\frac{100}{47.6}\times 9520=Rs.20000$