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Mary paid 15% of her monthly salary towards an EMI. From the remaining salary. she paid 10% as Internet bill and 20% as rent. If after the mentioned expenses she was left with Rs. 24,990 /-, what was Mary's monthly salary ?1). Rs.45,000/-2). Rs.48,000/-3). Rs.42,000-4). Rs.36,000/- |
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Answer» Solution Let Mary's monthly salary = Rs. $100x$ Money spent on EMI = $\frac{15}{100} \times 100x = 15x$ Amount left = $100x - 15x = 85X$ % amount left after paying INTERNET BILL and rent = $100 - (10 + 20) = 70 \%$ => Amount left = $\frac{70}{100} \times 85x = 24,990$ => $\frac{7 \times 17x}{2} = 24,990$ => $X = \frac{24,990 \times 2}{7 \times 17}$ => $x = 210 \times 2 = 420$ $\therefore$ Mary's monthly salary = $100 \times 42$ = Rs. $42,000$ |
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