The rate per hour at which she delivers the newspapers would be option C. 140 newspapers/hour.
The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Mia takes 5/7 hours to deliver 100/1 newspapers on her paper route.
For 5/7 hours, she can deliver = 100/ 1 newspapers
For 1 hours, she can deliver = (100/ 1) / (5/7)newspapers
= 100 x (7/5)
= 140
Hence, the rate per hour at which she delivers the newspapers would be option C. 140 newspapers/hour.
Learn more about the unitary method;
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