Two cars start at the same point and travel in the same direction at average speeds of 65 miles per hour and 40 miles per hour. How much time (in hours) must elapse before the two cars are 87.5 miles apart?

A) 3.5 hours
B) 3.49 hours
C) 1.35 hours
D) $0.83$ hour
E) $2.19$ hours

Question

Two cars start at the same point and travel in the same direction at average speeds of 65 miles per hour and 40 miles per hour. How much time (in hours) must elapse before the two cars are 87.5 miles apart?

A) 3.5 hours
B) 3.49 hours
C) 1.35 hours
D)

0.83

hour
E)

2.19

hours

Lucas Silvestre · Accepted Answer

Final Answer : A, Explanation :   The relative speed between the two cars is   65 − 40 = 25 65 - 40 = 25 65 − 40 = 25   miles per hour. To find the time it takes for them to be 87.5 miles apart, divide the distance by the relative speed:   87.5 ÷ 25 = 3.5 87.5 \div 25 = 3.5 87.5 ÷ 25 = 3.5   hours.

Two cars start at the same point and travel in the same direction at average speeds of 65 miles per hour and 40 miles per hour. How much time (in hours) must elapse before the two cars are 87.5 miles apart?

A) 3.5 hours
B) 3.49 hours
C) 1.35 hours
D) $0.83$ hour
E) $2.19$ hours

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Learning Objectives

Related questions

Two cars start at the same point and travel in the same direction at average speeds of 65 miles per hour and 40 miles per hour. How much time (in hours) must elapse before the two cars are 87.5 miles apart?A) 3.5 hoursB) 3.49 hoursC) 1.35 hoursD) 0.830.830.83 hourE) 2.192.192.19 hours

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Learning Objectives

Learning Objectives

Related questions

Two cars start at the same point and travel in the same direction at average speeds of 65 miles per hour and 40 miles per hour. How much time (in hours) must elapse before the two cars are 87.5 miles apart?

A) 3.5 hours
B) 3.49 hours
C) 1.35 hours
D) $0.83$ hour
E) $2.19$ hours