Two wheels A and B are of radius 21 cm and 42 cm respectively. Both wheels are rolled at the same time towards each other and distance between their centres is 2043 cm, and they both meet after 12 seconds by making equal number of revolutions. Find the speed of wheel B.
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Answer:
113.5 cm/sec
Step-by-step explanation:
equate the time and cal the distance cover by B .
finally divide the distance cover by b by 12.
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