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A boy ran for 30 minutes and then walked...

A boy ran for 30 minutes and then walked for the same time to cover a total distance of 2.5 km. The boy runs with a speed of 4 km/h. The boy walks with a speed of

A

1.0km/h

B

1.5km/h

C

2.5km/h

D

3km/h

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