SOLUTION: It takes my Father 3 hours to plow the our cornfield with his new tractor. Using the old tractor it takes me 5 hours. If we both plow for 1 hour befire I go to shcool.how long will
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Question 663548: It takes my Father 3 hours to plow the our cornfield with his new tractor. Using the old tractor it takes me 5 hours. If we both plow for 1 hour befire I go to shcool.how long will it take him to finish
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
It takes my Father 3 hours to plow the our cornfield with his new tractor.
Using the old tractor it takes me 5 hours.
If we both plow for 1 hour before I go to school,how long will it take him to finish
:
let t = time Dad plows after he goes to school
:
Let the completed job = 1; (a plowed field)
:
A shared work equation
+ = 1
Multiply by 15, results
5(t+1) + 3 = 15
5t + 5 + 3 = 15
5t = 15 - 8
t =
t = 1.4 hrs or 1 + .4(60) = 1 hr 24 more minutes to finish
:
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