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Sum of present age of A, B and C = 90 – (7 × 3) = 69 years Present age of C = 69 – (39 + 25) = 5 years 6 years hence, age of C = 5 + 6 = 11 years
A man buys cashew nuts at Rs.600 per kg and sells them at Rs.15 per 50 grams. What is his profit/loss percentage?
A shopkeeper sold a fridge for Rs. 1200, making a 20% gain. The fridge was marked at Rs. 1400. What was the discount he provided to make only 10% profit?