mathcounts problem 72

Mathematics
Tutor: None Selected Time limit: 1 Day

Ellie can paint a room in 2 hours, and Diedre can paint the same room in 4 hours. How many minutes will it take Ellie and Diedre, working together, to paint the room?

Jan 2nd, 2015

Ellie paints 1/2 in 1 hour

Diede paints 1/4 in 1 hour

Both paint 3/4 in 1 hour

Full can be painted in 4/3 hours , 80 minutes.

Answer; 80 minutes

Jan 2nd, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Jan 2nd, 2015
...
Jan 2nd, 2015
Mar 25th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer