SOLUTION: heather can rake all the leaves in the yard in 4 hours, Beth can do it in 6. How long would it take them to do the yard together?

Question 720385: heather can rake all the leaves in the yard in 4 hours, Beth can do it in 6. How long would it take them to do the yard together?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of raking
Heather's rate:
( 1 yard ) / ( 4 hrs )
Beth's rate
( 1 yard ) / ( 6 hrs )
Rate raking together:
( 1 yard ) / ( t hrs )
-----------------

Multiply both sides y

hrs

Together, they can rake the yard in 2 hrs 24 min
----------------
check:

OK
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