SOLUTION: A clerk is asked to file 800 cards. If he can file cards at the rate of 80 cards per hour, the number of cards remaining to be filed after 7 hours of work is what?

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Question 1104335: A clerk is asked to file 800 cards. If he can file cards at the rate of 80 cards per hour, the number of cards remaining to be filed after 7 hours of work is what?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
y=mx+b
-
system%28b=800%2Cm=-80%29
Let x=7; find y.