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 from the following answers
A) 12km	B) 16 km	C) 20 km	D) 24 km	E) None of these
Explanation :   Let distance be 24 km   10 = 24 km/4 + 24 km/6   Answer – 24 km
<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