Averages Q.6

6A question is followed by two statements I and II that contain certain data. Tell by selecting one of the answer choices given, whether the data given in the statements are sufficient for answering the question.
Question: A horse ran 100 miles without stopping. What was the average speed in miles per hour?
Statements
I. The horse ran 20 miles per hour for the first 50 miles.
II. The entire journey starts from 8 pm on day one to 4 am the following day.

Option : B
Explanation : First statement is not sufficient to answer the question because the speed of the second half of the distance is not given here but statement II can answer as information to calculate average speed = distance/time is given in the statement.

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