Question
A traveler moves a distance in three intervals. In the first 'u - 15' km, he travels at 20 km/h, in the next 'u' km at 40 km/h, and completes the journey of 'u + 15' km at 30 km/h. If the average speed for the entire trip is 30 km/h, what is 'u'?
Given the average speed is 30 km/h: 
Solve for u: Simplify the equation to get: 
More Time and distance Questions
- Amit and Deepak are standing on point A and B respectively, which are 300km apart. Amit starts moving to and from between A and B at 25km/hr while Deepak s...
- ‘E’ and ‘F’ are going from place ‘R’ to place ‘S’, which is 900 km apart. If ‘E’ started 2.5 hours after ‘F’ but both of them reached ‘S’ at the same time,...
- A bus is running at a speed of 90 km/ph. What distance will it cover in 25 seconds?
- An amount of Rs 12,000 becomes Rs 14,520 in 2 years at compound interest (compounded annually). Find the rate of interest per annum.
- A truck can usually travel 240 metres in 12 seconds. How much distance (in km) can the truck cover in 2 hours if it travels at 110% of its normal speed?
- A man travels from A to B at 40 km/h and returns from B to A at 60 km/h. Find his average speed for the whole journey.
- Two friends start running on a circular track of 900 metres in opposite directions. One runs at 18 m/s and the other at 27 m/s. When will they first be tog...
- A thief is spotted by a policeman from 800m. When the policeman starts chasing, the thief also starts running. If the speed of the thief is 32km/h and that...
- A was travelling from point X to point Y. He increased his speed by 12 km/h after every hour. He reached his destination in 16 hours. If his initial speed ...
- A car travels from town A to town B, a distance of 180 km, at a speed of 60 km/h and returns from B to A at 90 km/h. What is the average speed of the car f...
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)