In 2011, a local Dairy Queen had $750,000 in sales. In 2012, Dairy Queen’s sales were up 15%. What were Dairy Queen’s sales in 2012?   I can't figure out how to work this problem. I know it comes out to be $862,500, but I need to know how to work out the problem for my midterm this coming Tuesday. Please help me.

frances heard that a car stereo system was on sale for 30% off.if the sale price was 57.75 what was the origonal price of the stereo.

A rare painting increased in value 2,700% over the past 59 years. This was an increase of $33,000. What was the value of the painting 59 years ago? What is the value of the painting now?

What is the percent increase for a house that sells for $71,450 and then later for $104,700? Estimate the answer and briefly describe how you determined the estimate. The increase, rounded to the nearest thousand, is what?

The price of an Apple computer dropped from $1,699 to $1,299. What was the amount of decrease? What is the percent decrease? (round to nearest tenth)   I know how to get the amount decrease by subtracting to two, but I need to know how to work out the percent decrease. I know the answer to the percent decrease is 23.5% but I need to know to how work out the problem to get that answer. Please help.

The cost of replacing the exhaust muffler on your car is currently $192. The previous time that you had the same replacement done, the cost was $134. What is the percent increase in your repair bill (rounded to the nearest percent)?

Arch's motorboat cost $15,000 in 1990 and has depreciated by 10% every 3 year. how much was the boat worth in 1999?

In November, Janet paid $67.06​ for electricity. The following month, her electricity bill increased to $75.04​. By what percent did the bill change? Round your answer to 2 decimal places.