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spare parts 16

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Spare parts has comics and random math topics for discussion. Includes questions (and answers), puzzles, and links to other sources.

12/2/14

Racing Cars

race cars math question

Two cars are opposite each other on a 1-mile oval track.

The red car is racing at 85 miles per hour. And, the blue car is speeding at 90 miles per hour.

How many minutes will it take the blue car to catch the red car?

 

ANSWER


11/19/14

"Three men breaking bread"

A hungry traveler meets 2 men with some bread.

The first man has 5 loaves, and the second man has 3 loaves.

The two men generously put their loaves of bread into the center, and then they split the bread equally (3 ways).

After the meal, the satisfied traveler reaches into his pocket and pulls out 8 coins to compensate the men... He hands the first man 5 coins and the second man 3 coins, and then he leaves...

Later, the traveler realizes that he had split the coins incorrectly and paid each man the wrong amount!

Why?  How should the traveler have divided the 8 coins among the two men?


 ANSWER

 

 

10/15/14

POLYGONS

Identify the coordinates of each vertex in the following regular polygons

 

polygons interior exterior angles image 1


polygons interior exterior angles image 2

 

POLYGON SOLUTIONS



 

10/7/14

Volume Question?

(Measured in cubic feet,) how much dirt is in a rectangular shaped hole that is 4 feet by 6 feet and 18 inches deep?

volume question image

ANSWER

 

 

8/17/14

Finding an area math puzzle

Can you figure out the answer to the riddle?

"When I phone aunt & uncle, I reach Las Vegas. Or, when I dial wife + son, I get New York."

"If I dial niece & baby, what area do I get?"

 

Hint #1

Hint #2

 

ANSWER

 

 

 

7/25/14

Distance and Time

clock question image

Currently, it is 3:30pm.

Within the next hour, at what time -- to the nearest second -- will the minute hand lie on top of the hour hand?

 

Mathplane SOLUTION

Dr G. SOLUTION - Method 2

SOLUTION - Method 3

 

 

Find more clock questions in the Geometry Introduction.

 

 

 

 

 

 

 





 

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traveler and splitting bread

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 










 

 

 

 

us map math puzzle

 

 

 

 

 

 

 

 

 

 

 

 

 

Math Comic #148 - "Television Time" (7-24-14)

math comic 148 television time

Here are two "timers"  :-)

 

 

 

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