Two cars X and Y start running towards each other from two places 216 km apart. The ratio of the speeds of X and Y is 5 : 7 and the speed of X is 60 km/h. After how many minutes will X and Y meet each other?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 90.
The ratio of the speeds of X and Y = 5 : 7
The speed of X is 60 km/h
Speed of Y = (60/5) × 7 = 84 km/h
Required time = 216/(60 + 84) = 3/2 hour
= 3/2 × 60 = 90 minutes