Travel time is calculated by which formula?

Study for the Commercial Driver’s License (CDL) Test. Focus on key concepts and sample questions, each with explanations. Prepare to ace your exam!

Multiple Choice

Travel time is calculated by which formula?

Explanation:
Travel time is the duration it takes to cover a distance at a given speed. The correct approach is to divide the distance by the speed: time = distance / speed. When you use miles and miles per hour, the result is in hours. For example, traveling 120 miles at 60 mph takes 2 hours (120 ÷ 60 = 2). Another example: 240 miles at 60 mph takes 4 hours (240 ÷ 60 = 4). If you multiplied speed by distance, you’d get a quantity with the wrong units (not time), so that isn’t the travel-time formula. Saying it can be calculated in multiple ways is too vague for a precise answer; the standard and correct method is distance divided by speed.

Travel time is the duration it takes to cover a distance at a given speed. The correct approach is to divide the distance by the speed: time = distance / speed. When you use miles and miles per hour, the result is in hours. For example, traveling 120 miles at 60 mph takes 2 hours (120 ÷ 60 = 2). Another example: 240 miles at 60 mph takes 4 hours (240 ÷ 60 = 4). If you multiplied speed by distance, you’d get a quantity with the wrong units (not time), so that isn’t the travel-time formula. Saying it can be calculated in multiple ways is too vague for a precise answer; the standard and correct method is distance divided by speed.

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