Question
Initially, a person spends 65% of his salary and saves
the remainder. When his salary is increased by 40%, his savings remain unchanged, and he finds that he spends Rs. 5,200 more. Calculate his initial salary.Solution
ATQ,  Let, the initial salary of the person be Rs. '100x'.  Initial expenditure of the person = 0.65 X 100x = Rs. '65x'  Initial savings of the person = 100x - 65x = Rs. '35x'  New salary of the person = 1.40 X 100x = Rs. '140x'  Savings of the person remains the same.  So, 65x + 5200 = 140x - 35x  Or, 105x - 65x = 5200  Or, 40x = 5200  So, x = 130 So, the initial salary of the person = 100x = 100 × 130 = Rs.13,000
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