Question

question 23

a car traveled 18.5 miles in 15 minutes. how many miles per hour was it traveling?

60
70
68
72
55
none of these

Explanation:

Convert minutes to hours

$$ 15\text{ minutes} = \frac{15}{60}\text{ hours} = 0.25\text{ hours} $$

Calculate speed in miles per hour

$$ \text{Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{18.5\text{ miles}}{0.25\text{ hours}} = 74\text{ mph} $$

Compare with given options

$$ 74 otin \{60, 70, 68, 72, 55\} \implies \text{none of these} $$

Answer:

• 60
• 70
• 68
• 72
• 55
• none of these (Correct answer)