Two vehicles A and B travel with uniform speed 30 km per hour and 60 km per hour respectively in the same direction. They start at the same time and from the same place for a distance of 120 km. The faster vehicle B reaches the destination and travels back with the same speed. Assume that the loss of time to change the direction is negligible. If x is the distance travelled by the slower vehicle A before the tow vehicles cross each other, then x is

Two vehicles A and B travel with uniform speed 30 km per hour and 60 k

1.	Two vehicles A and B travel with uniform speed 30 km per hour and 60 km per hour respectively in the same direction. They start at the same time and from the same place for a distance of 120 km. The faster vehicle B reaches the destination and travels back with the same speed. Assume that the loss of time to change the direction is negligible. If x is the distance travelled by the slower vehicle A before the tow vehicles cross each other, then x is
A.	70 km
B.	75 km
C.	80 km
D.	90 km
Answer» D. 90 km