Question
A man spends 20% of his monthly salary on rent and 35%
on other expenses. He invests the remaining salary in shares and fixed deposits in the ratio of 7:5. If the difference between his annual investments in shares and fixed deposits is Rs. 19,800, find the amount he spends on rent each month.Solution
Man invests 20%+35% = 55%, rest 45% of his salary he uses to invest Let the monthly money invested on shares and fixed deposits are 7x and 5x respectively. 7x-5x = 19800/12 = 1650 2x = 1650 X = 825 12x = 9900 45% of his salary = 9900 Spend on rent = 20% = 9900/45×20 = 4400
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