Question

8men nd 16 boys can do work in 39 days.In how many days will 4 men nd 18 boys do it?

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

1. Let x be the men and y be the boys .

then,

• 8x+16y=39----eqn 1

• 4x+18y =18----eqn 2

then multiply eqn 2 by 8 and 1 by 4 .

then eqn will be,

• 24x+64y=256----eqn 3

• 24x+144y=144----eqn 4

then by subtracting eqn 3 and 4 we get,

y=7/5 and x= 2.3

therefore men do the work in 7/5days and boy in 2.3 days