SOLUTION: Good Day,
I really need your help in solving this problem:
It takes Robert 9 hr longer to construct a fence than it take Eldwin. If they work together, they can construct the
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Question 816287: Good Day,
I really need your help in solving this problem:
It takes Robert 9 hr longer to construct a fence than it take Eldwin. If they work together, they can construct the fence in 20 hr. How long would it take each, working alone, to construct the fence?
Thank You in advance :)
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
r = e + 9
r + e = 20
---
r + e = 20
e + 9 + e = 20
2e + 9 = 20
2e = 11
---
e = 11/2 = 5.5 hours
r = 14.5 hours
---
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