MCQOPTIONS
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| 1. |
The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must the wheel make in order to keep a speed of 66 km/hr. |
| A. | 250 |
| B. | 2500 |
| C. | 25 |
| D. | 200 |
| Answer» B. 2500 | |