SOLUTION: Company A Spent a total of $11 million on advertising in fiscal year 2010, 2011, and 2012. The amount spent in 2012 was three times the amount spent in 2010. The amount spent in 2

Question 948381: Company A Spent a total of $11 million on advertising in fiscal year 2010, 2011, and 2012. The amount spent in 2012 was three times the amount spent in 2010. The amount spent in 2011 was $3 million less than the amount spent in 2012. How much was spent on advertising each year.
My attempt to set-up the system:
x + y + z = 11
y - z = 3
z = 3x
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Company A Spent a total of $ million on advertising in fiscal year ,, and .
your attempt to set-up the system was perfect, system just need to be solved
so,
in year company spent million,
in year company spent million,
in year company spent million,
total: ........eq.1
The amount spent in was three times the amount spent in .
........eq.2
The amount spent in was $ million less than the amount spent in .
........eq.3
solve the system:
........eq.1
........eq.2
........eq.3
-----------------------------------------
start with ........eq.3 substitute .......3a
go to
........eq.1 substitute from eq.3a
...... solve for

go to .......3a substitute

go to ........eq.2 substitute

so, each year on advertising was spent:
in year company spent million,
in year company spent million,
in year company spent million,

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