A girl goes to her school from her house at a speed of 6km/hr and returns at a speed of 4 km/hr. If she takes 10 hours in going and coming back, the distance between her school and house is  Choose the correct choice:
A) 12 kms
B) 16 kms
C) 20 kms
D) 24 kms
E) None of above
Let distance be 24 kms
10 = 24 kms/4 + 24 kms/6 Answer : 24 kms
<result>D</result>
A girl goes to her school from her house at a speed of 6km/hr and returns at a speed of 4 km/hr. If she takes 10 hours in going and coming back, the distance between her school and house is