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Radha and Hema are neighbours and study ...

Radha and Hema are neighbours and study in the same school. Both of them use bicycles to go to the school. Radha's speed is 8 km/hr whereas Hema's speed is 10 km/hr. Hema takes 9 minutes less than Radha to reach the school. How far is the school from the locality of Radha and Hema ?

A

5 km

B

5·5 km

C

6 km

D

6·5 km

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