We have given as if you're going 80 miles per hour. it will take 30 minutes to go 40 miles.
What is the unitary method?
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.
We have given as if you're going 80 miles per hour. we need to find how long it takes to go 40 miles.
For time taken to go 80 miles = 1 hour
Time taken to go 1 mile = 1 / 80 hour
Time taken to go 40 mile = 40 / 80 hour
= 1/2 hour
Thus, it will take 30 minutes to go 40 miles.
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