Homework Help: math

Posted by Diane on Sunday, April 4, 2010 at 11:31pm.

Suzy can paint a house in 4 hours. Peter can paint the same house in 6 hours. How long will it take to paint the house if they painted it together?

math - DrBob222, Sunday, April 4, 2010 at 11:48pm
I solve these by the following:
1 house/4 hours = 0.25 house/hr.
1 house/6 hours = 0.157 house/hr.

If they paint together they will have those combined or
0.25 house/hr + 0.167 house/hr = 0.417 house/hour.
or 1/0.417 hours/house = 2.4 hours.

Answer this Question

Related Questions

math - If Sally can paint a house in 4 hours, and John can paint the same house ...
math - If Sally can paint a house in 4 hours, and John can paint the same house ...
math - I have trouble solving word problems. Can you help me solve this problem...
Math - If Sally can paint a house in 4 hours, and John can paint the same house ...
Math - If sally can paint a house in 4 hours and John can paint the same house ...
algebra - It takes 7 hours for Will to paint a house. Judy can paint the same ...
math - I have trouble solving word problems. Can you tell me the best approach ...
math - it takes bill 4 hours to paint a house. it takes john 7 hours to paint ...
math - If Sally can paint a house in 4 hours, and John can paint the same house ...
math - If Sally can paint a house in 4 hours, and John can paint the same house...

For Further Reading

First Name:
School Subject:
Answer: