Exams › SSC CGL (Prelims) › General

An express train covers a fixed distance in 40 minutes at an average speed of 200 km/h. Due to construction work, it needs to be diverted, increasing the distance by 25%. If the train needs to arrive at its destination on time in 40 minutes, what should its new average speed be in km/h?

1. 250 km/h
2. 260 km/h
3. 270 km/h
4. 280 km/h

Correct answer: 250 km/h

Solution

Since time remains 40 minutes, speed is directly proportional to distance. If the distance increases by 25%, the speed must also increase by 25%. Thus, new speed = $200\times 1.25 = 250$ km/h.

Related SSC CGL (Prelims) General questions

• Two cyclists start from the same point on a circular track of length 900 m at 7:00 a.m. and ride in opposite directions. Their speeds are 6 km/h and 9 km/h respectively. At what time will they meet for the fourth time?
• A bus covers 30% of a journey at a speed of 24 km/h and the remaining distance at a speed of 36 km/h. What is the average speed of the bus for the entire journey?
• Three runners on a 2.5 km circular track start from the same point with speeds 8 km/h, 10 km/h, and 12 km/h. From 9:00 AM to 3:00 PM, how many times do they meet at the starting point?
• A taxi travels at a constant speed of 75 km/h to cover a certain distance in 3 hours 12 minutes. If road construction increases the time taken by 24 minutes, by what percentage must the taxi’s average speed decrease to complete the journey?
• A person cycles from home to work at a speed of 8 km/h and reaches 18 minutes late. If he increases his speed to 12 km/h, he reaches 6 minutes early. What is the distance from home to work?
• The ratio of the speeds of a train and a truck is 5:6. If the truck covers a distance of 450 km in 5 hours, what is the speed of the train in km/h?

⚔️ Practice SSC CGL (Prelims) General free + battle 1v1 →