X and Y start at the same time to ride from place A to place B, which is 80 km away from A. X travels 4 km per hour slower than Y. Y reaches place B and at once turns back meeting X, 16 km from place B. Y’s speed (in km/h)is:
Answer & explanation
Correct answer: option 4
According to question ,
Ratio of Y : X
Distance ( 80 + 16 ) : ( 80 - 16 )
96 : 64
3 : 2
Speed 3 : 2
(3-2)R = 4 km/h
So , Speed of Y = 3 × 4 = 12 km/h