Given:
Time it takes the person with the riding mower = 4 hours
Time it takes the person with the push mower = 11 hours.
Let's find how long it takes them working together to cut the lawn.
Apply the formula to find the cutting rate:
[tex]rate=\frac{distance}{time}[/tex]
• Thus, the cutting rate for the person with the riding mower is:
[tex]rate=\frac{1}{4}\text{ of the lawn per hour}[/tex]
• The cutting rate for the person with the push mower is:
[tex]rate=\frac{1}{11}\text{ of the lawn per hour}[/tex]
To find the combined rate, we have:
[tex][/tex]