SOLUTION: 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 together? Thank you

Question 421874: 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 together?
Thank you
Found 2 solutions by edjones, sudhanshu_kmr:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Let t=time it takes them working together.
john does 1/6 the job in 1 hr and sally does 1/4.
1/4 + 1/6 = 1/t
3/12 + 2/12 = 5/12
t=12/5 hrs. working together.
.
Ed
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!

portion of house that will be painted in one hour = 1/4 + 1/6
= 5/12

required time = 12/5 hr.

= 2 hours 24 minutes.

RELATED QUESTIONS
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by stanbon)
If Sally can paint a house in a 4 hours, and John can paint the same house in 6 hours,... (answered by richwmiller,Alan3354,Edwin McCravy)
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by askmemath)
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by Paul)
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by edjones)
If Sally can paint a house in 4 hours and John can paint the same house in 6 hours, how... (answered by solver91311,stanbon)
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by checkley77)
if sally can paint a house in 4 hours, and john can paint the same house in 6 hours, how... (answered by nerdybill)
If sally can paint a house in 4 hours and john can paint the same house in 6 hours how... (answered by solver91311,josmiceli)
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how... (answered by Alan3354)