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September 18, 2014

September 18, 2014

Posted by **Anonymous J** on Saturday, October 23, 2010 at 9:48am.

- Algebra II -
**Reiny**, Saturday, October 23, 2010 at 9:59amJack's rate = lawn/6

Marilyn's rate = lawn/7

combined rate = lawn/6 + lawn/7 = 13lawn/42

combined time = lawn/(13lawn/42) = 42/13 or 3.23 hours

it would take about 2 hours and 14 minutes.

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