SOLUTION: Mar can paint a wall in 5 days while Louie can finish the same work in 3 days. In how many days can they do the same work together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Mar can paint a wall in 5 days while Louie can finish the same work in 3 days. In how many days can they do the same work together?      Log On


   

Question 472732: Mar can paint a wall in 5 days while Louie can finish the same work in 3 days. In how many days can they do the same work together?
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Mar can do 1%2F5 of the job in a day
Louie can do 1%2F3 in a day
Together they can do 1%2F5+%2B+1%2F3 in a day
1%2F5+%2B+1%2F3+ = 3%2F15+%2B+5%2F15 = 8%2F15 per day
%288%2F15%29+%2A+y+=+1
y+=+15%2F8
so it will take 1 and 7/8 day