Question 490937
Find the hourly rate of each painter.
If Mary can paint the house in 4 hours, then she can paint {{{1/4}}} of the house in 1 hour.
If John can paint the house in 6 hours, then he can paint {{{1/6}}} of the house in 1 hour.
So working together, they can paint {{{1/4 + 1/6 = 5/12}}} of the house in 1 hour, which means that they can paint the entire house in {{{12/5}}} hours.
{{{12/5 = 2.4}}}hours. or {{{2}}}hours and {{{24}}}minutes.