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

Algebra ->  Rate-of-work-word-problems -> 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      Log On


   



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) About Me  (Show Source):