SOLUTION: One clerk can file 12 folders per minute and a second clerk, 9. How long will it take them working together to file 672 folders?
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Question 912818: One clerk can file 12 folders per minute and a second clerk, 9. How long will it take them working together to file 672 folders?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
12x+9x=672
21x=573
x=672/21
x=32 minutes
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