SOLUTION: randy can paint a room in 15 hrs. less than the time his brother adan could together they can finish painting the room in 5 hrs. how long would it take randy if he waited alone?

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Question 1043224: randy can paint a room in 15 hrs. less than the time his brother adan could together they can finish painting the room in 5 hrs. how long would it take randy if he waited alone?
Answer by josgarithmetic(39617) About Me  (Show Source):
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randy can paint a room in 15 hrs. less than the time his brother adan could together they can finish painting the room in 5 hrs. how long would it take randy if he waited alone?


ADJUSTED DESCRIPTION:
Randy can paint a room in 15 hrs. less than the time his brother could. Together they can finish painting the room in 5 hrs. How long would it take randy if he worked waited alone?

Rates of the painters working the same task together will be summed. 
Randy,  1%2F%28x-15%29
Brother, 1%2Fx
Together, 1%2F5


Your objective is to solve for x-15, for RANDY.

1%2F%28x-15%29%2B1%2Fx=1%2F5
First solve for x, the time for his brother to do this job if alone.