Answer:
8 miles per hour
Step-by-step explanation:
Current proportion:
.5mile
----------
3.75min
Now, we need to convert this to miles per hour.
We already have unit miles in the numerator. Now we need to fix the denominator.
Since the question is asking for mph, we should have our denominator changed to hours.
3.75 min=.0625 hour.
We need to get to ONE hour, not .0625 of an hour.
So,
.0625*16 =1.
using this information, we can revise our first proportion.
.5 of a mile *16=8
So, final answer,
8mph
8miles
-------
1hour
Speed is the ratio of distance covered to the time taken by a body. The speed of the bike is 8mi/hr
Speed is the ratio of distance covered to the time taken by a body
Given the following
Distance = 0.5mile
Time (in hours) = 15/4 * 1/60
Time (in hours) = 1/16 hrs
Substitute
Speed = 0.5 * 16
Speed = 8mi/hr
Hence the speed of the bike is 8mi/hr
Learn more on speed here: https://brainly.com/question/13943409
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