Question
If 15 men working 10 hours a day can make 25 quilts in
18 days, then in how many days 20 men working 12 hours per day will make 20 quilts?Solution
Let the number of days be x. According to question, => (15 ×  10 ×  18)/25 = (x ×  20 ×  12)/20 => x = 9
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