Posted by **Kaley** on Monday, March 16, 2009 at 9:31pm.

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint the house?

the answer is 2 hrs and 24 min. How did they come up with that?

- math -
**bobpursley**, Monday, March 16, 2009 at 10:36pm
In twelve hours, sally can paint 3, and john 2, or five houses together.

combined rate=5houses/12hours

1house=rate*time=5/12 * time

time= 12/5 hrs

## 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...
- 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 - If Sally can paint a house in 4 hours, and John can paint the same ...
- math - I have trouble solving word problems. Can you tell me the best approach ...
- Math - If sally can paint a house in 4 hours and John can paint the same house ...

More Related Questions