If 2 men or 3 boys take 40 hrs to do a certain piece of work ,how long will 4 men and 9 boys working together take to complete the work?
kusumlatasharma489:
there is only one equation there must be two equations to solve
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2men =40hrs
1man=40/2=20hrs
4men=4*20=80hrs
3boys=40hrs
1boy=40/3hrs
9boys =40/3*9=40*3=120hrs
if it helps mark this brainliest
1man=40/2=20hrs
4men=4*20=80hrs
3boys=40hrs
1boy=40/3hrs
9boys =40/3*9=40*3=120hrs
if it helps mark this brainliest
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