Question

Larry rides his bike at a rate of 8.8 inches per second. About how m any miles per hour can Larry ride his bike?

Answer 1

Larry rides his bike 0.5 miles per hour

Solution:

Given that Larry rides his bike at a rate of 8.8 inches per second

To find: Speed in miles per hour

So we have to convert 8.8 inches per second to miles per hour

Use the conversion factor

$1 \text{ inch } = \frac{1}{63360} \text{ mile }$

$1 \text{ second } = \frac{1}{3600} \text{ hours }$

Convert 8.8 inches per second to miles per hour

$8.8 \frac{\text{inches}}{\text{second}} = 8.8 \times \frac{1}{63360} \times 3600 \times \frac{\text{miles}}{\text{hour}}$

$8.8 \frac{\text{inches}}{\text{second}} = 8.8 \times 0.00001578282 \times 3600 \times \frac{\text{miles}}{\text{hour}}\\\\8.8 \frac{\text{inches}}{\text{second}} = 0.5 \frac{miles}{hour}$

Thus Larry rides his bike 0.5 miles per hour