Solve matrices using Gaussian elimination or...
This is a word problem and I'm not very good at these, so please help.
eAuction.com spent a total of $11 million on advertising in fiscal years 2001, 2002, and 2003. The amount spent in 2003 was 3 times the amount spent in 2001. The amount spent in 2002 was $3 million less than the amount spent in 2003. How much was spent on advertising each year?
I'm not sure if this is how I should proceed but this is a far as my brain would stretch...
x = 2001
y = 2002
z = 2003
x + y + z = $11 million
I'm rambling here:
3z - x = ?
z - 3,000,000 = y
How do you use Gaussian elimination or Gauss-Jordan elimination to solve this? :confused:Thanks in advance.