Question

Select the correct answerA car moves with an average speed of 45 miles/hour. How long does the car take to travel 90 miles?O A2 minutesВ.2 hoursOC.45 minutesΟ Ο ΟD45 hoursE90 minutesResetNext

Answer 1

Given data:

The average speed of the car is

$S=45\text{ miles/hour}$

The distance traveled by the car is

$D=90\text{ miles}$

The average speed can be expressed as,

$\begin{gathered} S=\frac{D}{T} \\ T=\frac{D}{S} \end{gathered}$

Here, T is the time taken by the car.

Substituting the values in the above equation, we get:

$\begin{gathered} T=\frac{90\text{ miles}}{45\text{ miles/hour}} \\ =2\text{ hours} \end{gathered}$

Thus, the time taken by the car is 2 hours, and option (B) is correct.