3 boys can complete a work in 7 days .1 boy can complete it in?
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1
1 boy can complete in 3\7 days
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5
Answer:
21 days
Step-by-step explanation:
3 boys can complete a work in 7 days
First we find total unit of work.
Total work = Number of worker x number of days
= 21 units of work
Now, 21 unit of work complete by 1 boy
Similar, total work can't be change.
Let one boy take d days to finish 21 unit of work.
1 x d = 21
d = 21 days
Hence, One boy can finish same job in 21 days.
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