Two cars X and Y travelling in opposite directions along the same high way at uniform velocities 110 kmh-1 and 90kmh-1 respectively pass each other at a certain point. The velocity of X relative to Y at the time they pass each other is
-
A.
200 kmh-1 -
B.
100 kmh-1 -
C.
40 kmh-1 -
D.
20 kmh-1
Correct Answer: Option A
Explanation
R = 110 + 90 = 200