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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 Preview

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

    Solution Summary

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