Question
The ratio of monthly savings to monthly expenditure of
Rohan is 5:6 respectively. If his monthly savings is increased by 40% while monthly expenditure is decreased by 20%, then his new monthly income is 19800. Find monthly expenditure of Rohan originally.Solution
ATQ, Let original monthly savings and monthly expenditure of Rohan is Rs. 5x and Rs. 6x respectively. According to question; 1.4 × 5x + 0.8 × 6x = 19800 7x + 4.8x = 19800 11.8x = 19800 So, x = 1680 Desired answer = 6 × 1680 = Rs.10080
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