Let 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.
It 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?
i dont know i want help to solve the problem solving
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