FERMAT 2006 Problem 18

The front wheel of Georgina’s bicycle has a diameter of 0.75 metres. She cycled for 6 minutes at a speed of 24 kilometres per hour. The number of complete rotations that the wheel made during this time is closest to

Answer Choices
A. 610
B. 1020
C. 1360
D. 1700
E. 5430