Question

Ram spends 20% of his monthly income on his hold expenditure, 15% of the rest of books, 30% the rest on clothes and saves the rest. On count he comes to know that he has finally saved Rs 9520
Find his monthly income.

• A. 10000
• B. 15000
• C. 20000
• D. None of these

Answer 1

The correct option is C 20000

Let he earns Rs. P
x = -20, y = -15, z = -30

$P[1+\frac{x}{100}][1+\frac{y}{100}][1+\frac{z}{100}]=9520$

$P\left[\frac{80}{100}\right]\times \left[\frac{85}{100}\right]\left[\frac{70}{100}\right]=9520$

P $\times$ 0. 476 = 9520,
P = 20000