2men and 7 boys can do a piece of worik
in 4 days. It is done by 4 men and 4 boys
in 3 days How long would it take for one
man or one boy to do it.
Answers
Answered by
1
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Answered by
8
let the work done by 1 men in= x days
and work done by 1 boy in = y days
A.T.Q
2x + 7y = 4---- eq1
x= 4- 7y/2
4x + 4y = 3---- eq2
4( 4-7y/2)+4y= 3
8-14y+4y=3
-10y= -5
y= 1/2
2x+7(1/2) = 4
2x+ 7/2= 4
2x= 1/2
x= 1/4
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