The ratio between the speeds of two trains is \(5:6\). If the second train covers 600 km in 5 hours, then what is the speed of the first train in km/h?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 100
Speed is distance ÷ time, so the second train's speed comes from the 600 km it covers in 5 hours. The ratio 5 : 6 says the first train's speed is \(\frac{5}{6}\) of the second train's.
Speed of the second train: \(\frac{600}{5}=120\) km/h
Speed of the first train, \(\frac{5}{6}\) of that: \(120\times\frac{5}{6}=100\) km/h