SOLUTION: it takes bob 10 hours to clean. it takes bill 7 hours to clean. How long does it take if they work together?
Algebra.Com
Question 911633: it takes bob 10 hours to clean. it takes bill 7 hours to clean. How long does it take if they work together?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
7x + 10x = 70
17x = 70
x = 70/17 = ~4.12hrs
RELATED QUESTIONS
it takes John three times as long to clean an office building as Lisa. If they work... (answered by ewatrrr)
Lupe can clean 4 houses in certain hours. it takes susie 2 more hours to clean 4 houses.... (answered by josgarithmetic)
Joan takes 7 hours to clean the basement. It takes mike 12 hours to do this job. How long (answered by ikleyn,ankor@dixie-net.com)
It takes Brenda 15 hours to clean an attic. Danielle can clean the same attic in 13... (answered by josmiceli,Edwin McCravy)
It takes Rob 10 hours to clean an attic. Sam can clean the same attic in 11 hours. How... (answered by ankor@dixie-net.com)
Working together, Sarah and Heidi can clean the garage in 6 hours. If they work alone, it (answered by richwmiller)
Working together, Sarah and Heidi can clean the garage in 6 hours. If they work alone, it (answered by josmiceli)
Josh can clean the math building on his campus in 3 hours. Ken takes 7 hours to clean the (answered by greenestamps,mananth,josgarithmetic,math_tutor2020)
Rob takes 9 hours to clean the attic.
Huong can clean the same attic in 15 hours.
How (answered by ikleyn,josmiceli)