The Train and the Tunnel

A train is a half mile long and is about to enter a 10 mile tunnel. If the train is traveling at 35mph, how long will it take for the entire train to make it through the tunnel, from the front of the train entering to the end of the train leaving the tunnel?

18 minutes.

Length of the train: 0.5 miles
Length of the tunnel: 10 miles
Total distance: 0.5 + 10 = 10.5 miles

Time = 10.5 miles / 35 mph = 0.3 hours = 18 minutes

Posted in Brain Teasers

A Circled of Joined Hands

You dance in a circle of joined hands,
And though they spin away I can always see your face,
In the world, no matter where I am,
One look at you and I know my place.

What am I?

A clock.

An analogue clock is a circle, and the hands of a clock are joined at the middle.
The hands can point away from you, but the clock face is always visible.
No matter where you are in the world, you can probably find a clock.
“One look at you and I know my place…in time!”

Thanks to Helena for creating this and sending it in.

Posted in Riddles
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Three Feet But No Head

What has three feet but no head?

A yard stick (it’s 3 feet long).

Posted in Riddles

Leaving Home

A man leaves home, turns left, goes straight, turns left again, goes straight and turns left once more then returns home and there’s another man with a mask on. What’s going on?

A baseball game.

Posted in Brain Teasers

A Smiling Guard

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, “Why are you smiling?”

How did he know his companion was smiling?

They were facing each other. As to why his companion was smiling, the world may never know.

Posted in Brain Teasers

Letters, Letters, What Comes Next?

What letter comes next letter in this series?

A E F H I ___

K. It’s the series of capital letters without curves in alphabetical order.

Posted in Brain Teasers

Four Nines To Make a Hundred

How can you make four 9’s equal 100?

99 9/9 = 100

Posted in Brain Teasers

Many Foods Make Me Strong

Many foods can make me strong but give me water and I won’t last long. What am I?

Fire.

Posted in Riddles

How Old is Malcolm, His Dad and Grandfather?

Malcolm is the number of weeks of his father’s age treated as days and his grandfather’s age in months. All three of their ages add up to 120 years. How old is Malcolm, his father and his grandfather?

Malcolm is 6.
The father is 42. 42 days = 6 weeks.
The grandfather is 72. 72 months = 6 years.

Posted in Brain Teasers

Shared Birthdays

In 2012 a class was divided into 2 groups. Their assignment was to find the names of at least 3 children who were born on the same day from 5 different months of 2011. These were the results:

Group 1
August 20: Oliver, William, and Adam.
January 3: John, Alice, and Ken.
September 7: Bruce, Shane, and Peter.
June 11: April, Patrick, and Bobby.
July 19: Trent, Julie, and Charles.

Group 2
March 1: Karl, Willie, and Patty.
February 29: Blake, Kobe, and Wayne.
December 24: Kyle, Chad, and Zoe.
May 12: Matthew, Manny, and Adrian.
November 20: Greg, Fiona, and Elizabeth.

The members of group 2 got an F on the assignment. Why?

Group 2 failed because 2011 wasn’t a leap year, meaning there was no February 29th.

Posted in Brain Teasers