If 6 man and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do same in 2 days,the rime,taken by 15 men and 20 boys in doing the same type of work will be:
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Step-by-step explanation:
Work do by both in 1 day= 1/6x + 1/8y = 1/10
Work do by both in 1 day=
1/26x + 1/48y = 1/2
like that you can solve and find x and y
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