Variables

x*5=6*10

x=?

Simple Multiplication

You use 5 tons of printer ink in the year 2000. The next year you use 2 times that much of printer ink. The year after that, you use 2 times as much printer ink than the year 2001. Assuming this pattern doesn't change, how much ink will you use in the year 2008?

Percents

You have $500.00. Taxes take 50% of the money you have. You gain a paycheck of $42.71. You spend $20.00. How much money do you have now?

More Variables
I*V=W

I=2.

(I+V)*3=E
   E=((8*4)+5)-16

What is V?


MORE! Letter Variables
a=b+1 b=c+1 c=d+1 and so on.
z=145
what is a?



Celestial math
There are ten stars in the universe.
 100 form over 100 years. 23 explode a year 
after those 100 years for 25 years. In those 
25 years 20 stars form every two years. How 
many stars are there now?

Spritacola
You have $10.00. You want to buy spritacola for 
$2.50 a can. How many can you buy? Extra Credit:- )
How hyper are you afterward?


WATERMELON
You eat 5 watermelons in a year. 
Bob eats the same amount. 
Fred eats two times more. 
Joe eats three times more. 
This pattern continues. Jill 
is the 10th person. How many 
watermelons do all of you eat in all?


Gemstones
You collect gemstones. 
You have 10 rubies, emeralds and 
sapphires. You gamble. You pay 
all your rubies. You go to a slot
 machine. Assuming you match all of 
the diamonds (which will triple the 
amount of rubies you get), how many 
saphires do you have?



Probability

You have a 6 sided die. Out of 66 rolls,

what percentage is it that you roll a 4 or a 2?

National parks

The Grand Canyon's length is 579 ft. It's height

is 1274 in. What is the area? (The Grand Canyon isn't actually this small).

Products and Brain Teasers

There are 10 wires that are plugged in. You buy 15 packs of 16 wires and 6 filaments. 3 wires burn out. You throw them into the trash can. How many wires are plugged in?

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