A boy goes to his school from his house at a speed of 3 km/hr and returns at a speed of 2 km/ hr. If he takes 5 hours in going and coming, the distance between his house and school is :
A6.5 km
B6 km
C5 km
D5.5 km
A6.5 km
B6 km
C5 km
D5.5 km
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