Solve the Problem $\mathrm { MPH } = \frac { \text { rpm } \times \text { tire diameter } } { \text { gear ratio } \times 336 } .$

question 191

Multiple Choice

Solve the problem.
-The approximate speed of a car in miles per hour (MPH) can be found in terms of the engine's revolutions per minute (rpm) , the tire diameter in inches, and the overall gear ratio by the formula $\mathrm { MPH } = \frac { \text { rpm } \times \text { tire diameter } } { \text { gear ratio } \times 336 } .$ If a car has an rpm of 5300, a tire diameter of 26 inches, and a gear ratio of 3.22, what is its Approximate speed in miles per hour?

• A)122 mph
• B)113 mph
• C)127 mph
• D)118 mph

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