Question

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?

Answer 1

3400/60 = 56.6666 minutes/60 = 0.94 hours

63360/5280 = 12 miles

12/0.94 = 12.76 miles per hour for Nina

Nina is faster