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[√ (225/729) -√ (25/144)] ÷ √ (16/81) = (15/27) – (5/12) ÷ (4/9) = (5/9) -(5/12) ×9/4 =5/36 ×9/4 =5/16
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If 14 men working 14 hours a day can make 14 quilts in 14 days, then in how many days 28 men working 28 hours per day will make 28 quilts?
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Ratio of the work done by P, Q and R in one day is 7:4:9 respectively. They all together can complete the work in 44 days. Q and R worked on it for 30 d...
