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Llana [10]
3 years ago
15

Aubrey can walk 4 1/2 miles in 1 1/2 hours. Find her average speed in miles per hour.

Mathematics
2 answers:
Naddik [55]3 years ago
4 0
Time = 11/2 = 5 1/2
Road = 4 1/2 miles
Speed = 5 1/2 : 4 1/2 = 1 2/9 <------------answer
PtichkaEL [24]3 years ago
3 0

Answer: 3 miles per hour.

Step-by-step explanation:

Given : Aubrey can walk 4\dfrac{1}{2} miles in 1\dfrac{1}{2} hours.

We can first convert the mixed fraction into improper fraction.

i.e. Distance =  4\dfrac{1}{2}\text{ miles}=\dfrac{4(2)+1}{2}=\dfrac{9}{2}\text{ miles}

Time = 1\dfrac{1}{2}\text{ hours}=\dfrac{2(1)+1}{2}=\dfrac{3}{2}\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{\dfrac{9}{2}}{\dfrac{3}{2}}

i.e.  the average speed in miles per hour =\dfrac{9}{3}

i.e.  the average speed in miles per hour =3

Hence, her average speed is 3 miles per hour.

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