Question
Nikhil spends x% of his salary on rent, then 30% of the
balance on groceries, pays Rs. 6600 for transport, and saves Rs. 5496 from a total income of Rs. 27000. Find x.Solution
ATQ, 27000 × {(100 − x)/100} × (70/100) − 6600 = 5496 = 27000 × 70/10000 × (100 − x) − 6600 = 5496 = 189 × (100 − x) − 6600 = 5496 18900 − 189x − 6600 = 5496 12300 − 189x = 5496 189x = 12300 − 5496 = 6804 x = 6804/189 = 36
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