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?



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 <s>waited</s> alone?


Rates of the painters working the same task together will be summed.

<pre>
Randy,  {{{1/(x-15)}}}
Brother, {{{1/x}}}
Together, {{{1/5}}}
</pre>


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


{{{1/(x-15)+1/x=1/5}}}
First solve for x, the time for his brother to do this job if alone.