b2bt wrote:
Bunuel wrote:
Official Solution:
The radius of the front wheels of a cart is half that of the rear wheels. If the circumference of the front wheels is 1 meter and the cart traveled 1 kilometer, how many revolutions did the rear wheels make?
A. \frac{250}{\pi}
B. \frac{500}{\pi}
C. 250
D. 500
E. 750
The circumference of the rear wheels is twice that of the front wheels, i.e. 2 meters. Thus, the rear wheels made\frac{1000}{2} = 500 revolutions.
Answer: D
The radius of the front wheels of a cart is half that of the rear wheels. If the circumference of the front wheels is 1 meter and the cart traveled 1 kilometer, how many revolutions did the rear wheels make?
A. \frac{250}{\pi}
B. \frac{500}{\pi}
C. 250
D. 500
E. 750
The circumference of the rear wheels is twice that of the front wheels, i.e. 2 meters. Thus, the rear wheels made\frac{1000}{2} = 500 revolutions.
Answer: D
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