Answer:

Explanation:
From the problem it can be seen that 360,000 is 40% of the sales she got this year. So, 40% of her sales is 360,000.
40% of x is mathematically 0.4 times x.
Therefore the equation you could use is:

If you want to solve this for x, simply divide 0.4 from both sides to get x by itself.

So this year she made 900,000 dollars.