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Let number of 10 paisa, 20 paisa and 50 paisa coins be ‘9x’, ‘7x’ and ‘5x’, respectively. ATQ, (0.1 × 9x) + (0.2 × 7x) + (0.5 × 5x) = 48 Or, 0.9x + 1.4x + 2.5x = 48 Or, 4.8x = 48 So, x = 10 So, number of 20 paisa coins = 7x = 70 Therefore, required number of coins = 0.40 × 70 = 28
If 14 men working 9 hours a day can make 24 quilts in 16 days, then in how many days 20 men working 12 hours per day will make 20 quilts?
B is thrice as efficient as A and C is 0.50 times as efficient as A. What is the ratio of number of days taken by A, B, and C when they work individually?
(x + 3) workers complete 50% of work in 4 days at 5 hours/day. (x + 1) workers finish the rest in 5 days at 6 hours/day. Find x.
