SOLUTION: sasha and matt are painting the apartments in a building in the summer. sasha was painting the apartments by herself for 9 days. after those 9 days, matt joined sahsha to help with

Question 1021498: sasha and matt are painting the apartments in a building in the summer. sasha was painting the apartments by herself for 9 days. after those 9 days, matt joined sahsha to help with the painting. working together, they finished the apartments in 4 more days, meat could have painted all the apartments by himself in 22 days. how many days would it have taken sahsha to paint all the apartments alone?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Sasha worked by herself for 9 days. Matt helped the last 4 days. If he could finish the apartments alone in 22 days, then he did 4/22 of the total work. Sasha took 9+4 days to finish 22-4/22, or 18/22 of the work. So, she took 13 days to finish 9/11 of the work.
(9/11)/13=9/143 of the work done per day by Sasha.
143/9 days of work needed by Sasha to do the whole job by herself. ☺☺☺☺
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