Sum of the ages of all the students in the class = 35 × 15 = 525 years Sum of the ages of the students along with teacher = 36 × 16.5 = 594 years So the age of the teacher = 594 – 525 = 69 years
A train passes a pole in 15 seconds and takes 18.75 seconds to completely cross a platform that is 120 meters long. What is the length of the train?
Two trains, Train X and Train Y, are traveling towards each other on parallel tracks between Stations A and B. How long will it take for Train X to meet...
A train crosses a pole in 36 seconds and a platform in 52 seconds. If the speed of the train is 54 km/hr, then what is the length of the platform?
There are two trains A and B. A start from point X at 5 AM towards point Y. Another train B starts at 6 AM from point X. If they meet at 10 AM an...
A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5 th of the time, the speed to cover remaining distance in the ...
Two trains of same length are running in parallel tracks in the same direction with speed 50 km/hr and 120 km/hr respectively. The latter completely cro...
Train X, traveling at a speed of 54 km/hr, crosses another train Y, which is moving in the opposite direction at a speed of 90 km/hr, in 't' seconds. If...
A man running at the speed of 5 kmph was over taken by the train moving with the speed of 41 kmph in 20 seconds. Find the length of train.
A train started from station P and preceded towards station Q at a speed of 72 km/h. 45 minutes later, another train started from station Q and preceded...
A train that is 300 meters long takes 15 seconds to pass a tree. What is the speed of the train in kilometers per hour?
