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September 20, 2014

September 20, 2014

Posted by **Johnny** on Monday, January 18, 2010 at 7:26pm.

- Math Problem Solving -
**drwls**, Monday, January 18, 2010 at 8:10pmLet Jay's lawn mowing rate be J lawns per hour. Marks rate is 2J per lawns per hour.

To do one lawn

4 hours = 1/(J + 2J) = 1/(3J)

J = 1/12 lawn per hour

(Jay would need 12 hours to do the lawn)

Mark's rate is 1/6 lawn/hour, so one lawn would take him 6 hours.

- Math Problem Solving -
**Ann**, Saturday, February 20, 2010 at 8:45amIt takes John 4 hours to mow a lawn. It takes Maria 3 hours to mow the same lawn. How long would it take if they worked together?

- Math Problem Solving -
**bisan**, Monday, March 29, 2010 at 1:36pmi dont know i want help to solve the problem solving

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