a work can be done by 1 man and 1 woman in 36/5 days,by 1 woman and 1 boy in 12 days and by 1 man and 1 boy in 9 days.How long will 1 man 1 woman and 1 boy working individually take to do yhe work
one month
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Answer:
Efficiency of man = 1/10 th part of work per day
Efficiency of woman = 1/12 th part of work per day
Efficiency of boy = 1/15 th part of work per day
Quantity of work done by 3 men = 3/10 th part of work per day
Quantity of work done by 2 women = 2/12 th part of work per day
Work left to do = 1 — (3/10 + 2/12) =(60 — 28)/60
Work left to do = 32/60
No of boys required to do the left over work in a day = 15*32/60 = 8
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