Question
Niharika saves 25% of her salary in National Savings
Certificate and spend 80% of the remaining amount on household items. If the cash in hand is Rs. 5550, what is her salary?Solution
Let her salary be Rs. A, So, A - 25 % of A - 80% of 75% of A = 5550 ⇒ A - 25A/100 - (80 x 75 x A)/(100 x 100) = 5550 ⇒ 100A - 25A - 60A = 5550 x 100 ⇒ 15A = 555000 ∴ A = 555000/15 = Rs. 37000
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