SOLUTION: Jimmie grades test for 5/7 of one class in an hour and he has five classes how long would it take him to grade all the test

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Question 978853: Jimmie grades test for 5/7 of one class in an hour and he has five classes how long would it take him to grade all the test
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Jimmie grades test for 5/7 of one class in an hour and he has five classes
how long would it take him to grade all the test.
:
Find how long to grade a complete class
Let c = time to grade one class
5%2F7c = 1
c = 7%2F5 hr to grade one class
Find the time for 5 classes
5 * 7%2F5 = 7 hrs to grade 5 classes