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nevsk [136]
3 years ago
5

Christy drove 132 miles in 2 3/4 hours. what was her average speed in miles per hour

Mathematics
2 answers:
coldgirl [10]3 years ago
5 0

Answer: 48 miles per hour

Step-by-step explanation:

Given : Christy drove 132 miles in 2\dfrac{3}{4} hours.

We can first convert the mixed fraction into improper fraction.

i.e. Time = 2\dfrac{3}{4}\text{ hours}=\dfrac{2(4)+3}{4}\text{ hours}

\dfrac{8+3}{4}\text{ hours}=\dfrac{11}{4}\text{ hours}

Now, the average speed in miles per hour =\dfrac{\text{distance}}{\text{time}}

i.e. the average speed in miles per hour =\dfrac{132}{\dfrac{11}{4}}}

i.e.  the average speed in miles per hour =\dfrac{132\times4}{11}

i.e.  the average speed in miles per hour =12\times4=48

Hence, her average speed is 48 miles per hour.

mojhsa [17]3 years ago
4 0
Christy's average mph is 48 because 132 divided by 2.75 = 48
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