The ratio between the speeds of two trains is 2 : 5. If the first train runs 350 km in 5 hours, then the difference between the speeds (in kmph) of both the trains is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 105
A ratio of 2 : 5 means the speeds are 2 parts and 5 parts of one common unit. The first train’s speed gives the value of one part.
Speed of the first train \(\displaystyle =\frac{350}{5}=70\) km/h, which is 2 parts
One part \(=35\) km/h
The difference is \(5-2=3\) parts \(=3\times35=\) 105 km/h