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Nina can ride her bike 63,360 feet in 3,400 seconds, and Sophia can ride her bike 10 miles in 1 hour. What is Nina's rate in miles per hour if there are 5,280 feet in a mile?
Which girl bikes faster?

Respuesta :

Nina's rate is 12.7 mph and Sophia's rate is 10 mph. Therefore, Nina is faster.

Answer:

12.705 miles/hr; Nina is faster

Step-by-step explanation:

If there are 5,280 feet in a mile then:

[tex]63360ft*\frac{1mile}{5280 ft} =12 miles[/tex]

There are 3600 seconds in an hour therefore

[tex]3400 s*\frac{1hr}{3600s} =0.944444444 hr[/tex]

if we divide distance and time we have nina's rate

[tex]S=\frac{d}{t} =\frac{12}{0.944} =12.705[/tex] miles/hr

Nina's rate is bigger than sophia's 10 miles/hour rate

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