A and B travel from X to Y at the speed of 20 km/hr and 30 km/hr respectively . If B takes \(\frac{1}{4}\) hour lesser time than A , then what is the distance between the X and Y ?
Answer & explanation
Correct answer: option 3
Ratio A : B
20 : 30
Speed 2 : 3
Time 3 : 2
( Distance = Speed × Time , so ratio of speed and time is inverse to each other )
According to question ,
1R = 15 minutes
3R = 45 minutes
Distance = 20 × \(\frac{45}{60}\) = 15 km