Mathematics · Speed, Time and Distance
Two wheels of diameter 7 cm and 14 cm start rolling simultaneously from two points A and B which are 1980 cm apart from each other in opposite directions towards each other. Both of them make the same number of revolutions per second. If both of them meet after 10 seconds, the speed of the bigger wheel is:
- 1154 cm/s
- 2132 cm/s✓
- 3110 cm/s
- 488 cm/s
Correct answer
132 cm/s
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