Question
From the salary of a software engineer, if 15% is used
as house rent, 25% of the remaining is spent on household items, 25% of the remaining as income tax, and 15% of the remaining on clothing, then he is left with Rs. 10,404. Find his total salary.Solution
Remaining after house rent: =0.85x Remaining after household items: =0.85x ×0.75=0.6375x Remaining after income tax: =0.6375x × 0.75 =0.478125x Remaining after clothing: 0.478125x ×0.85 =0.40640625x ATQ- 0.40640625x = 10,404 x=10,404 /0.40640625 ≈ 25,600 Total salary is Rs. 25,600.
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