Saturday
August 2, 2014

Homework Help: Math

Posted by Madison on Tuesday, August 31, 2010 at 9:32am.

Mike can mow a lawn in 3 hours. Paul can mow the same lawn in 2 hours. How long would it take both of them working together to mow the lawn? The answer is suppose to be 20/9.

This is what I did and I get 9/20. What am i doing wrong?
1.4x+1/5x=1 which gives u 9/20. I'm so lost...

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

MATH - Jack usually mows his lawn in 3 hours. Marilyn can mow the same yard in 5...
smith - tom can mow a lawn in 4 hours. perry can mow the same lawn in 5 hours. ...
algebra - it john 4 hours to mow a lawn it takes maria 3 hours to mow the same ...
algebra - Jack usually mows his lawn in 6 hours. Marilyn can mow the same lawn ...
algebra - Bob mosw his lawn in 3 hours, Jane can mow the same lawn in 5 hours. ...
Math - Suppose that it takes Sally 3 hours to mow, and it takes Tom 4 hours to ...
math - Jack usually mows his lawn in 4 hours. Marilyn can mow the same in 5 ...
math/117 - Jack usually mowes his lawn in 7 hours. Marilyn can mow the same yard...
Math - Jack usually mows his lawn in three hours. Marilyn can mow the same yard ...
Math - if jack can mow his lawn in 4 hours and sue can mow the same lawn in 7 ...

Search
Members