Question

If 4 men or 6 boys can do a piece of
work in 20 days, in how many days
can 6 men and 11 boys complete it,
working together?​

Answer 1

Answer:

6 days

Step-by-step explanation:

If 4 men can do a job in 20 days, it means 1 man does 1/80th of the work in a day.

If 6 boys can do a job in 20 days, it means 1 boy does 1/120th of the work in a day.

So 6 men will do 6/80th of the work in a day, and 11 boys will do 11/120th of the work in a day. Together, the 6 men and 11 boys will do (6/80) +(11/120) or (9/120) + (11/120) = 20/120th of the work in a day.

So they will complete the work in 120/20 = 6 days.

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Answer 2

Answer:

your answer is

30

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