SOLUTION: Tina can completely weed her vegetable garden in 1hr and 30 min. Her friend marisa can do the same in 2 hrs. if they worked together, how long would it take?
I'm not sure what s
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-> SOLUTION: Tina can completely weed her vegetable garden in 1hr and 30 min. Her friend marisa can do the same in 2 hrs. if they worked together, how long would it take?
I'm not sure what s
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Question 758019: Tina can completely weed her vegetable garden in 1hr and 30 min. Her friend marisa can do the same in 2 hrs. if they worked together, how long would it take?
I'm not sure what steps to go about using to complete this. I thought it might be done by using a system of equations but I think I would need more information in order to solve that. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! Tina can completely weed her vegetable garden in 1hr and 30 min.
Her friend marisa can do the same in 2 hrs.
if they worked together, how long would it take?
:
Let t = the time required when working together (in hrs)
Let the completed job = 1
:
Each will do a fraction of the job, the two fractions add up to 1
: + = 1
multiply by 6 to get rid of the denominators, results
4t + 3t = 6
7t = 6
t = 6/7 hrs, or converted to minutes: 6/7 * 60 = 51.4 minutes
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