Question
Out of his monthly income of Rs. 30,000, Arjun spent (R
- 5)% on rent, (R + 10)% on others and saved Rs. 6,000. Find R% of his monthly income.Solution
ATQ, Savings of Arjun = 30,000 - (R - 5)% of 30,000 - (R + 10)% of 30,000 = 30,000 - 300R + 1,500 - 300R - 3,000 = Rs. (28,500 - 600R) So, 28,500 - 600R = 6,000 Or, 600R = 22,500 Or, 'R' = 37.5 Required value = 0.375 × 30,000 = 11,250
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