Billie rides her bike 176.25 miles in three weeks. She averaged 11.75 miles per hour each time she rode. How many hours did it take her to ride the 176.25 miles?Required to answer. Single choice.
176.25 / 11.75 = 15 - hours
The three weeks part is irrelevant
176.25 m / 11.75 m / hr = 15 hours