BluSeaa
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Correct answers only please! If you don't know the answer, then please don't guess or say what you think it is.

Mike recently increased the size of his truck tires from the original P215/60R16 to the larger P235/7016. If Mike didn't recalibrate his speedometer, how fast is really going on the new tires when his speedometer shows he is traveling 60 mph?

A. 54.2 mph

B. 63.8 mph

C. 66.4 mph

D. 69.7 mph

Correct answers only please If you dont know the answer then please dont guess or say what you think it is Mike recently increased the size of his truck tires f class=

Respuesta :

neny101
M. Dbhd dhs here 54.2
david8644

Answer:

B. 63.8 mph

Step-by-step explanation:

IN order to solve this problem we just have to keep in mind that the miles per hour is calulcated by the number of revolutions that the tire is doing multiplied by the circumference of the tire, so the circumference of the tire is given by the first set of number in the tire the first one would be:

[tex]first:\frac{215}{60} \\Second: \frac{235}{70}[/tex]

So we just have to multiply it by the first one and then divide it by the second:

[tex]\frac{215}{60}*60=215\\215*\frac{235}{70}=63.8[/tex]

SO when the speedometer is on 60 mph, he will actually be going at 63.8 mph.

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