SOLUTION: a painting job can be completed by 7 painters in 17 days. if 21 more painters joined the team 9 days after starting work on the job, then how many more days are required to complet
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Question 334606: a painting job can be completed by 7 painters in 17 days. if 21 more painters joined the team 9 days after starting work on the job, then how many more days are required to complete the job?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
a painting job can be completed by 7 painters in 17 days.
if 21 more painters joined the team 9 days after starting work on the job,
then how many more days are required to complete the job?
:
Find out how many man-days to complete the job
7 * 17 = 119 man-days
:
Let d = no. of days to finish the job
:
there will be 28 total painters after the 1st 9 days
:
(7*9) + (28d) = 119
:
63 + 28d = 119
:
28d = 119 - 63
:
28d = 56
d =
d = 2 days to finish the job
;
;
Check solution
(7*9) + (28*2) =
63 + 56 = 119
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