Question

If you have changed the tires on your car, the original diameter is 34.5 inches to a new diameter of 36 inches, how fast are you actually going if your speedometer is reading 63 mph?

a-124.2
b-65.74
c-60.6
d-64.04

Answer 1

The actual speed of the car is approximately 65.67 mph.

Step-by-step explanation:

To calculate the actual speed of the car, we can use the concept of the ratio of the original and new tire diameters. Since the diameter of the original tire is 34.5 inches and the diameter of the new tire is 36 inches, we can find the ratio by dividing the new diameter by the original diameter: 36/34.5 = 1.043.

Now, we can use this ratio to find the actual speed of the car. If the speedometer is reading 63 mph, we multiply that by the ratio we found: 63 * 1.043 = 65.67 mph. So the actual speed of the car is approximately 65.67 mph.