SOLUTION: A road contractor wanted to build a 200 meter long road in 30 days and employed 20 workers. At the end of 15 days, he found that only 80 meter of the road has been completed. How

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Question 824023: A road contractor wanted to build a 200 meter long road in 30 days and employed 20 workers. At the end of 15 days, he found that only 80 meter of the road has been completed. How many more worker he must employ to complete the work in time?
Found 2 solutions by ankor@dixie-net.com, MathTherapy:
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
You are right, Let me correct this.
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A road contractor wanted to build a 200 meter long road in 30 days and employed 20 workers.
At the end of 15 days, he found that only 80 meter of the road has been completed.
Find the man-days to complete 80 meters
20 * 15 = 300 man-days
Find how many man-days per meter, 300/80 = 3.75 man-days per meter
:
How many more worker he must employ to complete the work in time?
Find how many man-days to finish the remaining 120 meters
120 * 3.75 = 450 man-days
:
let m = no. of addition workers required to finish in 15 days
(m+20)*15 = 450
15m + 300 = 450
15m = 450 - 300
15m = 150
m = 150/15
m = 10 more men required
:
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Thank you for pointing that out. Merry Christmas! CK
:

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

A road contractor wanted to build a 200 meter long road in 30 days and employed 20 workers. At the end of 15 days, he found that only 80 meter of the road has been completed. How many more worker he must employ to complete the work in time? 


highlight_green%2810%29 more men are needed.

You can do the check!! 



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