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Shared work

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After a heavy snowfall, Brian can shovel the entire driveway in 30 minutes. If his younger brother Allen helps, the job takes only 20 minutes. If we let x represent the time for Allen to clear the entire driveway by himself, write an expression for the following:
? Rate of work (job/minute=1 driveway/minute) by Brian
? Rate of work when Allen and Brian working together
? The rate of work by Allen

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Solution Summary

This is a shared work problem regarding shoveling snow. The rate of work when Allen and Brian is working together is determined.

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1. Brain's rate of work is 1 job for 30 minutes or 1/30 job/minute
2. Brain and ...

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