Saturday, May 19, 2012
Saturday, May 12, 2012
The best comparison
Which of the five makes the best comparison?
YYZZZYZZY is to 221112112 as YYZZYZZY is to:
a) 221221122
b) 22112122
c) 22112112
d) 112212211
e) 212211212

Answer:
c. Substitute numbers for letters-. Y = 2; Z = 1.
YYZZZYZZY is to 221112112 as YYZZYZZY is to:
a) 221221122
b) 22112122
c) 22112112
d) 112212211
e) 212211212

Answer:
c. Substitute numbers for letters-. Y = 2; Z = 1.
Two words using ten letters
Create two words using the following ten letters each once only.

Answer:
Vast & Melody
VODLTAMYSE

Answer:
Vast & Melody
Sunday, May 6, 2012
$100 for 100 pens
Your boss has asked you to purchase three different types of ballpoint pen. The first costs 50, the second $5.50, and the third $9.50. He has given you $100 and told you to purchase 100 pens in any combination as long as you spend exactly $100 for 100 pens. Just one solution is possible. Can you find it?
Hint: Familiarity with solving simultaneous equations would be helpful here.
Hint: Familiarity with solving simultaneous equations would be helpful here.

Answer:
It is always helpful to set up a legend of what is given and to work from there.
X = $.50 pens
Y = $5.50 pens
Z = $9.50 pens
Set up two equations as follows:
X + Y + Z = 100
$.50X + $5.50Y + $9.50Z = 100
Now, we need at least one of the values to drop out in order to consider the other two. Multiply the first equation by - .5 to drop X out of both equations.
- 0.5X - 0.5Y - 0.5Z = -50
+ 0.5X + 5.5Y + 9.5Z = 100
__________________________
+ 5.0Y + 9.0Z = 50
5Y = 50 - 9Z
Y = 10 - Z
Since we're dealing with whole numbers, Z must be a whole number and a multiple of 5. In this case, Z can only equal 5. With any greater number, Y will become a negative number. So, Z = 5 and Y becomes 1 leaving X to be 94 pens at $.50.
94 pens at $.50
1 pen at $5.50
5 pens at $9.50
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