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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?
What is Nina’s rate in miles per hour if there are 5,280 feet in a mile?

Respuesta :

fareizzy

Answer:

3600 seconds = 1 hour

Then

3400 seconds = 3400/3600

                       = 17/18 hours

5280 feet = 1 mile

Then

63360 feet = 63360/5280 mile

                 = 12 mile

So

Distance covered by Nina in 17/18 hours = 12 mile

Then

Distance covered by Nina in 1 hour = 12/(17/18) miles

                                                        = 12.71 miles.

Step-by-step explanation:

the speed of Nina is 12.71 miles per hour.

Speed of Sophia is 10 miles per hour. So Nina is the girl that rides at a faster speed.