Reasoning: To find the percent of a number: If the percentage is less than 100, we place a decimal point in front of the percent. Then, we multiply the percent by the whole. For example, .15 x 680 = 102. Since 15% is less than 100, we place a decimal point in front of the 15. Then, we just multiplied it by the whole of 680.
We know that 102 = 15% of 680, so since that is the amount of money taken off the total, we subtract it: 680-102=578. Therefore, the new price is 578.
I did this for the rest of the questions, and there are 3 correct answers: 680 to 578 340 to 289 250 to 212.50
