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
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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..
