Friday

November 28, 2014

November 28, 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.

**Answer this Question**

**Related Questions**

algebra - Jack usually mows his lawn in 6 hours. Marilyn can mow the same lawn ...

MATH - Jack usually mows his lawn in 3 hours. Marilyn can mow the same yard in 5...

Algebra - Jack usually mows his lawn in 4 hours. Marilyn can mow the same yard ...

math - Jack usually mows his lawn in 4 hours. Marilyn can mow the same in 5 ...

alegbra - Jack usually mows his lawn in 4 hours. Marilyn can mow the same yard ...

Math - Jack usually mows his lawn in three hours. Marilyn can mow the same yard ...

algebra - jack usually mows his lawn in 4 hours mariltn can mow the same yard in...

algebra - Jack usually mows his law in 5 hours. Marilyn can mow the same law in ...

algebra - Jack usually mows his lawn in 4hrs Marilyn can mow the same yard in ...

math/117 - Jack usually mowes his lawn in 7 hours. Marilyn can mow the same yard...