Speed Time Distance Questions Answers, practice tests, sample papers - Ascent CAT MBA Entrance training institute

Question 4 the day : February 23, 2004
The question for the day is based on some basic Speed, Time and Distance concepts and is about average speeds.

Question
Jim travels the first 3 hours of his journey at 60 mph speed and the remaining 5 hours at 24 mph speed. What is the average speed of Jim's travel in mph?

1. 42 mph
2. 36 mph
3. 37.5 mph
4. 42.5 mph

Correct Answer is 37.5 mph . Choice (3) is right.

Explanatory Answer

Average speed = .

Total distance traveled by Jim = Distance covered in the first 3 hours + Distance covered in the next 5 hours.

Distance covered in the first 3 hours = 3 * 60 = 180 miles
Distance covered in the next 5 hours = 5 * 24 = 120 miles

Therefore, total distance traveled = 180 + 120 = 300 miles.

Total time taken = 3 + 5 = 8 hours.

Average speed = = 37.5 mph.

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