SOLUTION: Okay, I have been sitting here for an hour reading this problem. I am totally lost. Please help me. Bob can paint a house in 15 hours. If he hires Cindy to help they can do it

Algebra ->  Probability-and-statistics -> SOLUTION: Okay, I have been sitting here for an hour reading this problem. I am totally lost. Please help me. Bob can paint a house in 15 hours. If he hires Cindy to help they can do it       Log On


   



Question 223217: Okay, I have been sitting here for an hour reading this problem. I am totally lost. Please help me.
Bob can paint a house in 15 hours. If he hires Cindy to help they can do it in 9 hours. If Cindy does it alone, how long will it take her?

Answer by jim_thompson5910(35256) About Me  (Show Source):