Mathematics
Grade6
Easy
Question
Mary ran 5 miles race in 45 minutes. Melanie ran 2 miles race in 17 minutes. Determine the unit rate of faster person among Mary and Melanie in miles per minute.
- 9
- 11
- 12
- 13
Hint:
So from the question, we can compare the speed of both Mary and Melanie by obtaining their respective speeds per minute. We obtain the speed by dividing the total time taken by the total miles covered.
The correct answer is: 9
Step 1 of 1:
In this question, we were given Mary runs 5 miles in 45 minutes and Melanie runs 2 miles in 17 minutes and asked to find who is the fastest runner in miles per minute. So first we find the miles per minute of each one and then compare them.
Mary runs 5 miles in 45 minutes.
Melanie runs 2 miles in 17 Minutes
Time taken for Mary for one mile is 45/5 = 9 minutes
Time taken for Melanie for one mile is 17/2 = 8.5 minutes.
Final Answer:
The right choice is-- a. 9
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