Posted by **Kylie C.** on Monday, March 21, 2011 at 8:02pm.

The diameter of each tire on Niki's bike is 66 centimeters (cm). It takes her 16 minutes to ride 10 kilometers (km).

How fast did Niki ride, in kilometers per hour?

thx in advance =D

- Mathamatics -
**Reiny**, Monday, March 21, 2011 at 8:10pm
Did you realize that the size of Niki's bike is irrelevant?

Since Rate = Distance/ time

Rate = 10/(16/60) km/h = 37.5 km/h

- Algebra -
**Ann**, Sunday, March 27, 2011 at 3:54pm
The diameter of each tire on Niki's bike is 66 centimeters (cm). It takes her 16 minutes to ride 10 kilometers (km).

How fast did Niki ride, in kilometers per hour?

- Mathamatics -
**katherine**, Monday, November 28, 2011 at 5:31pm
37.50

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