SOLUTION: If every dollar I earn gives me a profit of 30 per cent and I want to make a profit of $2,740, how many dollars do I need to earn? When you work it out, please tell me how yo

Question 906283: If every dollar I earn gives me a profit of 30 per cent
and I want to make a profit of $2,740,
how many dollars do I need to earn?

When you work it out, please tell me how you did it.

Interested in knowing the formula - not the specific answer.
Thank you!
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
if your profit is 30 cents on every dollars that you earn, then your profit is equal to .30 * the number of dollars that you earn.

your formula is therefore p = .30*x, where x is the number of dollars that you earn.

what you do is replace what you know in this equation and then solve for what you don't know.

since you know p = 2740, then replace p in the equation to get:

2740 = .30*x

now you want to solve for x, so you divide both sides of the eqution by .3 to get 2740 / .3 = x

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