SOLUTION: please help me on this question below: Richard can paint the room alone in 5 days while Jose can paint the room alone in 3 days.in how many days will they be able to paint same ro

Algebra ->  Algebra  -> Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: please help me on this question below: Richard can paint the room alone in 5 days while Jose can paint the room alone in 3 days.in how many days will they be able to paint same ro      Log On

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Question 203599: please help me on this question below:
Richard can paint the room alone in 5 days while Jose can paint the room alone in 3 days.in how many days will they be able to paint same room,working together?
with representation,equation,answer and checking.
thank you
Answer by vleith(2517) About Me  (Show Source):
You can put this solution on YOUR website!
Rich can do 1%2F5 of a room in a day
Jose can do 1%2F3 of a room in a day
Together, they can do 1%2F5+%2B+1%2F3 room in a day
1%2F3+%2B+1%2F5
5%2F15+%2B+3%2F15
8%2F15 room in a day
So if they can paint 8/15 per day, then
%288%2F15%29+%2A+x+=+1
x+=+15%2F8 days
Just a little less than 2 days if they work together