• Views : 50k+
• Sol Viewed : 20k+

# #1 - Genentech Interview Tricky Train Problem

Difficulty Popularity

Wally is journeying through train from destination A to destination B. At an interval of every five minutes, he finds a train coming from the opposite direction. The velocity of the trains are equal of either direction.

If Wally reached the destination B in one hour, how many trains did he see through his journey?

• Views : 40k+
• Sol Viewed : 10k+

# #2 - Colliding Trains Interview Puzzle

Difficulty Popularity

A train is moving from station A to station B at 15 mph. Another train is moving in the opposite direction from station B to A at a speed of 20mph. A vulture is flying from Station A to station B at 25 mph. When the vulture reaches at the train moving from Station B to A, it starts flying back and flies at the same speed till it reaches the train moving from station A to B and starts flying in the reverse direction again. The vulture keeps flying to and fro till both the trains collide with each other.

What is the total distance that is traveled by the vulture?

• Views : 40k+
• Sol Viewed : 10k+

# #3 - Length of Bridge Interview Question

Difficulty Popularity

Alex Mahone was standing on a bridge and precisely 5m away from the center of the bridge. He saw a train coming from the end that was nearest to him. Seeing it, he ran towards the train and managed to jump off the track when the train was 2m away from the bridge. However, if he would have run in the opposite direction, the train would have hit him 2m before the end of the bridge.

If the speed of train is four times that of Alex Mahone, what is the length of the bridge in meters?

• Views : 30k+
• Sol Viewed : 10k+

# #4 - Percentage of Speed Interview Question

Difficulty Popularity

A train ran from one destination to another and took 1/4 of the time less to reach the destination due to engine upgrade than the usual. Can you find out the percentage of increase in speed of the train?

• Views : 30k+
• Sol Viewed : 10k+

# #5 - Cisco Interview Distance Question

Difficulty Popularity

A thief stole a precious painting from my house. He had a head start of 13 miles over me. Then he climbed over a train. The train is movie rather slowly and I am chasing him from my car with a speed 1.5 miles per hour greater than his present speed. Meanwhile my dog can run at 13 km/ hour and he keeps running to and fro between me and the thief standing on the back porch of the train.

Can you calculate how many miles does my dog run before I catch the thief?

• Views : 30k+
• Sol Viewed : 10k+

# #6 - Unoccupied Seats Interview Question

Difficulty Popularity

A train compartment has 40 seats and all the passengers sitting in that agree to the notion that they will share the total fare of the bus among them equally.

The total fair is 80.67. Calculate the seats that are unoccupied.

• Views : 20k+
• Sol Viewed : 10k+

# #7 - Time Work Interview Problem

Difficulty Popularity

Two passenger trains are traveling in opposite direction. The distance between them is 110 Kms. One of them starts at 4 AM and the other starts at 5 AM on a velocity of 20 and 25 KMPH respectively.

What is the time when they both will meet?

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