The type of variation between the speed and time is inverse.
The equation is r = d / t
The number of miles travelled is 102 miles.
<h3>What is the type of variation?</h3>
When the speed a person is driving at increases, the time it takes to travel would decrease. On the hand, speed a person is driving at decreases, the time it takes to travel would increase. This means that there is an inverse relationship.
The equation that represents an inverse relationship is
r = d / t
Where d is the distance
Distance = t x r
51 x 2 = 102 miles
To learn more about average speed, please check: brainly.com/question/21734785
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