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Mathematics 16 Online
OpenStudy (anonymous):

A cable installer can make 20 installations in 8 hours. How long will the installer spend making 30 installations? h

OpenStudy (z4k4r1y4):

if 20 installations take 8hrs then 10 installations take 4hrs. do you agree?

OpenStudy (z4k4r1y4):

so you have 20 + 10 and 8 + 4

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