7 men can complete a work in 52 days. In how many days will 13 men finish the same work?
(A) 20 days
(B) 13 days
(C) 7 days
(D) 28 days
Answers
if 7 men complete the work in 52 days, it means a man will take (52×7=364)days to complete the same piece of work.
therefore 13 men will take (364÷13)days which is equal to 28 days.
you cross multiply the all the outcomes and equate to 52 so as to get the number of days the people will work.
D.
Given,
7 men can complete the work in 52 days
To find,
How many days that 13 men will take to finish the same work.
Solution,
We can simply solve this mathematical problem by using the following mathematical process.
Here, we can use the normal arithmetic method.
7 men can finish in = 52 days
1 man can finish in = 7×52 days
13 men can finish in = (7×52)/13 = 28 days
(The division and multiplication are done according to the direct or inverse relationship.)
Hence, 13 men will take 28 days to finish the Same work. (option D)