Algebra Practice Quiz 9

Multiple Choice Questions. Click on the correct answer.

Problem 6.


6. If John can fill the tank in 10 minutes working alone, and Julie can fill the tank in 20 minutes working, how long will it take if they work together (minutes)?
    (a)
    30.


    (b)
    10.

    (c)
    tex2html_wrap_inline29 .

    (d)
    tex2html_wrap_inline31 .

    (e)
    none of these.


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