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An 8" diameter wheel is driving a 20" diameter wheel via a pair of belts. The power input is supplied by a 5 HP motor rotating the driving wheel at 300 RPM. If the efficiency of the transmission is 80%, what RPM and torque is delivered to the driven wheel?
A) 120 RPM at 4 HP
B) 160 RPM at 4 HP
C) 220 RPM at 4.5 HP
D) 220 RPM at 4.8 HP
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