SOLUTION: Two contractors were working together to finish concrete. One can finish 25 sqaure yards in 4 hours, and the other can finish 25 sqaure yards in 5 hours. How much concrete can they
Algebra.Com
Question 434896: Two contractors were working together to finish concrete. One can finish 25 sqaure yards in 4 hours, and the other can finish 25 sqaure yards in 5 hours. How much concrete can they finish in 8 hours working together?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
1/4+1/5=1/t
5/20+4/20=9/20=1/t
9t=20
t=20/9
The two contractors can finish 25 square yards in 20/9 hours
8/(20/9)=72/20=3.6
3.6x25=90 sq. yds..
RELATED QUESTIONS
Two contractors were working together to finish concrete. One can finish 25 square yards... (answered by jorel1380)
Two contractors were working together to finish concrete. One can finish 25 square yards... (answered by Alan3354,josmiceli)
Hello there! I am having trouble with rate problems and how to solve them. here is one of (answered by stanbon,ikleyn)
A painter can finish painting a house in 4 hours. Her assistant takes 6 hours to finish... (answered by Ruli)
alvin and resty can finish painting the room in two hours working together. Alvin can... (answered by ikleyn)
Working together, Thamuz and Uranus can finish paonting the room in two hours. Thamuz can (answered by josgarithmetic)
Paul can finish a job in 2 hrs less than John. Working together they can finish it in 2... (answered by mananth)
Mark and Bert together can finish the job in 4 hours. How fast can Bert finish the job... (answered by ptaylor)
a can finish a job in 3 hour and b can finish the same ob in 6 hours. how long will it... (answered by mananth)