Question

Ten men working for 6 day's can complete 5 copies of a book. If there are 8 men working to complete 4 copies of the book , how many days will it take ?

Answer 1

Step-by-step explanation:

10 men working for 6 days can complete =5 copies of the book

total men's labour= 10×6 = 60

60 ÷ 5= 12 men's labour

total no. of copies=4

12×4 = 48

total men=8

48÷8 = 6

☆ so , 8 men will take 6 days to complete 4 copies of book

Answer 2

If there are 8 men working to complete 4 copies of the book, it will take 9.375 days.

Given:

10 men working for 6 days can complete

5 copies of a book

To find :

8 men working to complete 4 copies of the book, how many days will it take

Solution :

The number of copies filled by 10 members in 1 day is 1/6

work done by 10 numbers on one book is 1/5

If 8 men work for 4 copies in x days then

work done on one book per day is

$1/8*1/4*1/x$

But work done on one book by one person is the same

So,  

$x/32=1/300$

​x=9.375 days

Thus, it will take 9.375 days.

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