With an average speed of 45 km/h, a train reaches its destination on time. If it goes with an average speed of 30 km/h, it is late by 15 minutes. The total journey is :
Answer & explanation
Correct answer: option 3
Distance = Speed × Time
Speed and Time have inverse relationship.
Ratio of , Old : New
Speed 45 : 30
3 : 2
Time 2 : 3
According to question ,
1R = 15 min
Usual Time = 2R = 30 min
Distance traveled = \(\frac{45}{0.5}\) = 22.5 km