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if 3 mens or 6 boys can do a piece of work in 10 days working
7 hours a days,how many days will it takes to complete a work
twice as large with 6 mens and 2 boys working together for 8
hours a day?

Question Posted / mahesh


if 3 mens or 6 boys can do a piece of work in 10 days working 7 hours a days,how many days will it..

Answer / naseera shaik

3 men = 6 boys (6 men + 2 boys) = 14 boys.
More work, More days {Direct Proportion)
More boys, Less days (Indirect Proportion)
More hours per day, Less days (Indirect Proportion)
Work 1 : 2 }
Boys 14 : 6 } :: 10 : x
Hours per day 8 : 7 }
.-. (1 X 14 X 8 X x) = (2 X 6 X 7 X 10) <=> x = (840/112) = 15/2=7*1/2

Is This Answer Correct ?    17 Yes 2 No

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