"A video game is on sale at 75% off.  The sale price is $15.  What was the original price?" or "An investment grew by 22% and is now worth $1525.  How much was invested originally?" To solve these questions, you must understand that percentages are applied using multiplication.  Whether it is an increase or decrease, it was applied using multiplication.  Your job, therefore, is to undo that multiplication.  You are not undoing the increase or decrease; you are undoing the application of the percentage.  Therefore, three things will be true:  You will be dividing by the percent. If you have an increase, you will still add the percentage to 100. If you have a decrease, you will still subtract the percentage from 100. Sales tax, for example, is an increase; discounts are a decrease. An investment that grows in value is an increase; a population that declines in numbers is a decrease and so forth.  Let's imagine we have to work out the following problem: "A video is on sale at 75% off.  The sale price is $15.  What is the original price?"  Sale is another word for discount, so we're dealing with a decrease. $15 is our "after amount," because it's the number we have after the sale has been applied. If it's a decrease, subtract the percentage from 100. Because we're dealing with a decrease/discount, we'll subtract 100 - 75, giving us 25%. Do this by moving the decimal point two places to the left or dividing the number by 100. 25% becomes 0.25. This will help us reverse the multiplication that we talked about in Step 1. Grab a calculator, punch in '15,' hit divide, enter in '0.25,' and hit equals. You've just calculated the original price.  15 divided by 0.25 = 60, which means the original price was $60. If you want to double-check your answer to make sure it's correct, multiply the sale price (75%, or 0.75) with the original price ($60) and see if you get the sale price. ($15): 0.75 x 60 = $45 sale; $60 (original price) - $45 (sale amount) = $15 (sale price) To better understand this type of problem, read the prompt and see if you understand how to finish the following problem:  "An investment grew by 22% and is now worth $1,525.  How much was invested originally?"  This is an increase situation, so add 100 + 22. Convert the answer to a decimal: 122% becomes 1.22 On a calculator, enter '1,525', hit divide, enter '1.22', hit equals. Label the answer.  For this problem, 1,525 divided by 1.22 = 1250, so the original investment was $1,250.
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One-sentence summary -- Use the unknown original amount method for the following sorts of problems: Decide if it's an increase or decrease situation. If it's an increase, add the percentage to 100. Convert that number into a decimal. Divide the "after amount" by the decimal from step 3. Our "after amount" is $15, and our decimal is 0.25. Label appropriately and you're done. Practice on the following examples.

Q: Remove the case of the pie rolls. On a flat, clean surface, such as a baking tray or cutting board, slowly unroll the dough so it lies flat on the surface. Set down parchment paper or sprinkle flower on the surface beforehand to prevent the dough from sticking. The circles should be slightly bigger than the compartments on a muffin tray. You can use a glass or cookie cutter to cut out your dough. The number of circles you end up with depends on the size circles you're cutting. Place each circle in an individual compartment in a muffin tray. Push down the center of the circle slightly so they form small bowls. Spray down the muffin tray with a non-stick spray first. Consult the package directions for the temperature and baking times. Baking times vary greatly by brand. While you should always read the packages first, pie crusts typically take between 10 and 12 minutes to cook.
A: Unroll the dough on a flat surface. Cut the dough into circles. Place the circles in a muffin tray. Bake the dough.

Article: Keep the graphic or child’s name visible and facing outward. Slide the ring toy through the top so they hold the two blanket ends. Slide the toy until it is almost all the way down to the diaper tire. Check that it fits snugly. Slide a small piece of rolled-up light cardboard inside each handlebar roll.  Try to pin in place if they don’t hold naturally.  You may need to pin the toy in place, especially if the toy is pliable. You now have a fun, cute and very useful gift to give to the expectant mom.
Question: What is a summary of what this article is about?
Pin the bib to the top of the front diaper tire. Hold the ends of the front diaper tire blanket upward. Insert the baby bottle above the bib and underneath the ring toy. Create more definition and strength in the handlebars. Stuff the baby socks with a small amount of tissue paper to puff up the garment. Top the handlebars with one sock on each side. Add the second bib to the back diaper tire the same way you added the first bib to the front. Prop the stuffed toy on top so it appears that the toy is riding the motorcycle. Finished.

Article: Keep in mind that, as a CSI, you will be entrusted to handle evidence and possibly testify in court. Expect law enforcement agencies to favor applicants with a clean record. Anticipate a background check when you apply. Refrain from criminal behavior. Agencies will still consider applicants with less than spotless records. So don’t worry if you incur minor infractions, like parking tickets or noise complaints. Deal with them in a timely manner to demonstrate responsibility. Concentrate on sciences, including biology, chemistry, and physics. Take electives that focus on computers, since these are important tools in the CSI’s lab. Use less obvious courses, clubs, and activities to strengthen other skillsets that CSIs need to perform their jobs effectively. For instance:  Participate in theater or the debate club to become a confident public speaker. Join the school paper to practice writing concise reports. Take part in photography clubs or classes. Although educational requirements vary by agency, give yourself the most options possible by pursuing some level of higher learning. Aim for an associate’s, bachelor’s, or master’s degree from an accredited college or university. If possible, enroll in a school that offers degrees in criminal justice, forensic science, and/or crime scene investigations. If not, major in biology, chemistry, or a similar hard science. Some agencies may only require a high school diploma or general education diploma (GED). However, these agencies are more likely to be found in areas with very small populations and fewer CSI positions to fill. If you are unable or uninterested in pursuing a traditional degree through a two- or four-year school, consider alternate means. Research accredited online programs that offer certification in forensic science and/or crime scene investigation. Consider attending on-site training courses that do the same. Earn certification in less time than it would take to complete a more formal education. For reference, check out programs offered by:  Kaplan University Keiser University The National Forensic Academy The National Forensic Science Technology Center The National Institute of Justice Salem International University
Question: What is a summary of what this article is about?
Be a good citizen. Take appropriate coursework in high school. Earn a degree. Become qualified through tailor-made programs.