Practice30Create account

A train crosses an electric pole in 15 seconds and a bridge 300 m long in 45 seconds. The length of the train (in metres) is:

Competition practiceRatio, Percentage & Commercial Math
  • A100
  • B150
  • C200
  • D300

Step-by-Step Solution

The speed is the same in both cases: L/15 = (L + 300)/45 → 3L = L + 300 → L = 150 m. (The train runs at 10 m/s = 36 km/h.)
Answer: B) 150

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Ratio, Percentage & Commercial Math practice questions

More Ratio, Percentage & Commercial Math practice

In an election between two candidates, the winner secured 56% of the valid votes and won…A piggy bank holds ₹1, ₹2 and ₹5 coins in the ratio 3 : 4 : 2. If the money in it totals…A washing machine is marked at ₹15000. A customer gets a discount of 10% and then pays a…A man rows to a place 48 km away and comes back to the starting point. The stream flows…A sum of ₹6000 is lent partly at 5% and partly at 8% simple interest. If the total…