Question

Two cars leave from Minneapolis. Car A leaves at 12 pm, exactly 1 hr 30 mins before car B. However, Car A drives at a constant speed of 60 mph, while car B drives at a constant speed of 75 mph. Let d = the distance from Minneapolis in miles, and t = the time in hours after 12 pm. What is the equation to calculate the distance d for car A?

a) d = 60t
b) d = 75t
c) d = 60(t + 1.5)
d) d = 75(t - 1.5)

Answer 1

The equation to calculate the distance d for car A is d = 60(t + 1.5), which is option c).

Step-by-step explanation:

The equation to calculate the distance d for car A is d = 60(t + 1.5), which is option c).

To understand why, let's break down the information given in the question:

• Car A leaves 1 hr 30 mins before Car B, so its time can be represented as t + 1.5 (where t is the time in hours after 12 pm).
• Car A drives at a constant speed of 60 mph, so the distance it travels is directly proportional to the time it takes.

Combining these two pieces of information, we get d = 60(t + 1.5) as the equation to calculate the distance d for car A.