SOLUTION: cedric finish a project in 21 hours alone, while carl can finish the same project in 28 hours alone. Carl started the project 7 hours before cedric arrived to help him. How much lo

Question 1120280: cedric finish a project in 21 hours alone, while carl can finish the same project in 28 hours alone. Carl started the project 7 hours before cedric arrived to help him. How much longer would it take them to finish the project?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!

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