SOLUTION: If Jan can weed the garden in 2 hours and her husband can weed it in 1 hour and 30 minutes, find how long it takes them to weed the garden together.

Question 487686: If Jan can weed the garden in 2 hours and her husband can weed it in 1 hour and 30 minutes, find how long it takes them to weed the garden together.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
If Jan can weed the garden in 2 hours and her husband can weed it in 1 hour and 30 minutes, find how long it takes them to weed the garden together.
:
Let t = time required when weeding together
Let the completed job = 1 (a weed-free garden)
:
+ = 1
we can clear the denominators by multiplying by 6, results:
3t + 4t = 6
7t = 6
t = hrs working together, that's *60 = 51.43 minutes

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