The ratio between the speed of two trains is 3 : 4. If the second train covers 2 km in 50 seconds, the speed of the first train is:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 30 m/sec
The speed of the second train is found from the distance and time given; the first train’s speed then follows from the ratio 3 : 4.
Second train: \(2\) km \(=2000\) m in 50 s, so speed \(=2000\div50=40\) m/s
First train \(\displaystyle =\frac{3}{4}\times40=30\) m/s