# Sales for a business were 3 million dollars more the second year than the first, and sales for the third year were double the sales for the second year. If sales for the third year were 38 million dollars, what were sales, in millions of dollars, for the first year?

1
by eyes182

2015-03-29T08:48:00+08:00

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Given:

To answer this one, we need variables.

Let:

x       = sales for the 1st year

x+3     = sales for the 2nd year

2(x+3) = sales for the 3rd year

Sales for the 3rd year = 38 million \$

Asked: Sales for the 1st year in millions of dollars

Mathematical Sentence:

2 (x +3) = 38

x = ?

Solution:

2 (x +3) = 38

2x + 6  = 38

2x   = 38 - 6

2x = 32

x = 16

The 1st year sales in million dollars that is equal to x is 16 million dollars.

Check:

If 1st year is really 16 million dollars then,

2nd year = 1st year + 3 million dollars = 16 + 3 = 19 million dollars

3rd year = twice 2nd year = 19 x 2 = 38 million dollars, CORRECT