Weekly Logic Puzzle May 08 2014, 0 Comments

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Last Week's Puzzle

The U.S. gymnastics team won 13 gold medals against two other countries. Of 60 total medals awarded, there were: 20 bronze, 20 silver, and 20 gold. Germany won 5 gold medals. Japan won one-third of all the medals and had an equal number of silver and bronze medals. How many silver and bronze medals did Japan win?

Answer: 

Japan won 9 bronze and 9 silver medals. Since Germany and the US won 18 of the 20 gold medals, Japan must have won the remaining 2 gold medals. There are 60 medals in all, and one-third of those are 20. 20 - 2 leaves 18 medals of combined bronze and silver for Japan.  
 

This Week's Puzzle

If A + B = C + D and A and B are both positive whole numbers, then which of the following must be true:

a) C and D each have to be whole numbers

b) A x B = C x D

c) Neither C nor D can be negative

d) Either C or D has to be positive

e) None of the above

A new puzzle is posted weekly. Post your guesses below and check back next week to find out the answer!                

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