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Cyclist A started his journey on cycle a...

Cyclist A started his journey on cycle at `7:30` a.m. at a speed of 8 km/hr. After 30 minutes, cyclist B started from the same place but with a speed of 10 km/hr. At what time did B overtake A?

A

8 a.m.

B

10 a.m.

C

9 a.m.

D

9.30 a.m.

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