Answer:
The speed that gear B rotates at is 1500 rpm
Step-by-step explanation:
Number of teeth on gear A = 30
Number of teeth on gear B = 20
Therefore, one complete revolution of gear A will go round 30 teeth while one revolution of gear B is equivalent to 20 teeth
Hence, we have 1000 revolution will go round = 30 × 1000 = 30000 teeth
For gear B, therefore, we have 30000 teeth will give; 30000/20 = 1500 revolutions
Hence the speed that gear B rotates at = 1500 revolutions per minute.