SOLUTION: by itself a cold water faucet can fill a tub in 9 min. By itself, a hot water faucet can fill the same tub in 5 min. Together they can fill the tub in ? minutes?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: by itself a cold water faucet can fill a tub in 9 min. By itself, a hot water faucet can fill the same tub in 5 min. Together they can fill the tub in ? minutes?      Log On


   

Question 10581: by itself a cold water faucet can fill a tub in 9 min. By itself, a hot water faucet can fill the same tub in 5 min. Together they can fill the tub in ? minutes?
Answer by valdez62(8) About Me  (Show Source):
You can put this solution on YOUR website!
7 min add both of them and divide by 2