Using a riding lawnmower, Joe can cut his lawn in 45 minutes. Using a push mower,Joe's son can cut the lawn in 3 hours. If they work together, how long will it takethem to cut the lawn?
A. 24 minutes
B. 30 minutes
C. 36 minutes
D. 40 minutes
Answer:C
Using a riding lawnmower, Joe can cut his lawn in 45 minutes. Using a push mower,Joe's son can cut the lawn in 3 hours. If they work together, how long will it takethem to cut the lawn?
A. 24 minutes B. 30 minutes C. 36 minutes D. 40 minutes
Explanation: C