Question

Two men and seven boys can do a piece of work in four days while four men and four bays can do it in three days. how long would it take one man or one boy to do it alone?​

Answer 1

Step-by-step explanation:

5

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Time taken by 1 man to do the whole job = 15 days

time taken by 1 boy to do the whole job = 60 days

time taken by one boy and one man to do one day's work = 1/60 + 1/15

= 1/60 + 4/60

= 5/60 = 1/12

∴ Together they can do it in 12 days