SOLUTION: John can mow his yard in 2 hours. His sister can mow the yard in 2.5 hours. How long will it take for them to mow their yard together.

Algebra ->  Rate-of-work-word-problems -> SOLUTION: John can mow his yard in 2 hours. His sister can mow the yard in 2.5 hours. How long will it take for them to mow their yard together.      Log On


   

Question 123732: John can mow his yard in 2 hours. His sister can mow the yard in 2.5 hours. How long will it take for them to mow their yard together.
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
2*2.5/(2+2.5)=5/4.5=1.1111 hours to mow the job working together.