SOLUTION: twenty men were employed to do some work in a certain time.but when one third of the scheduled time was over,it was found that only one quater of the total work was completed.how m
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Question 1086916: twenty men were employed to do some work in a certain time.but when one third of the scheduled time was over,it was found that only one quater of the total work was completed.how many more men should now be employed.how many more men should now be employed to complete the work in three-fourths of the originally schduled time? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! twenty men were employed to do some work in a certain time.
but when one third of the scheduled time was over,it was found that only one quarter of the total work was completed.
how many more men should now be employed.how many more men should now be employed to complete the work in three-fourths of the originally schduled time?
:
let t = the time
let the completed job = 100
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" one third of the scheduled time was over, it was found that only one quarter of the total work was completed" t * 20 = *100 = 25
20t = 25 * 3
20t = 75
t = 75/20
t = 3.75 hrs
find how many man-hrs to complete the job
3.75 *20 = 75 man-hrs
"how many more men should now be employed to complete the work in three-fourths of the originally scheduled time?" * 3.75 = 2.8125 hrs is 3/4 of the scheduled time
let m = no. of additional men
2.8125(m+20) = 75
2.8125m + 56.25 = 75
2.8125m = 75 - 56.25
2.8125m = 18.75
m = 18.75/2.8125
m = 6.667 ~ 7 more men required
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Check this * 3.75 * 27 ~ 75 man-hrs, a completed job
