SOLUTION: 7 men can dig a drain in 10 days. how many men would dig the same drain in 14 days

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Question 1185315: 7 men can dig a drain in 10 days. how many men would dig the same drain in 14 days
Found 3 solutions by josgarithmetic, ikleyn, greenestamps:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Same job of 1 drain to dig?
7 men for 10 days;
n men for 14 days;

7%2A10=14n
n=%287%2A10%29%2F%287%2A2%29
highlight%28n=5%29

Answer by ikleyn(52784) About Me  (Show Source):
You can put this solution on YOUR website!
.
7 men can dig a drain in 10 days. how many men would dig the same drain in 14 days
~~~~~~~~~~~~~~~~~~~~~~~ 

The whole job is 7*10 = 70 man-days.


To complete the job in 14 days, 5 = 70/14  workers are needed.    ANSWER

Solved, answered and explained.



Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


You have two responses showing different ways to solve the problem.

Here is a third method.

They are all good methods. Try each one and find the one that "works" for you and use it on future similar problems.

Better yet, understand all three methods; depending on how a particular problem is presented, any one of the three methods might be easier to use.

The third method for this problem...

The number of days is increased by a factor of 14/10 = 7/5. 7/5 as many days means 5/7 as many men will be needed.

ANSWER: 7*(5/7) = 5 men will be needed