Oh, dude, it's like finding out how much your favorite snack has shrunk in size. To calculate the percent of change, you subtract the starting number from the final number, divide that by the starting number, and then multiply by 100. So, for this problem, it would be (85 - 136) / 136 * 100. Just plug and chug, my friend.
136
37.5% decrease.
The number 160
Well, first you need to find out what the 100% number is. To do that you divide 85 by 5 (the lowest common denominator between 85% & 100%) and you get 17. Now you divide 136 by 17 and you get 8. Then, to get the 100% number, you multiply the 8 by 20 (because 20 times 5 (the lowest common denominator) is 100%) and you get 160, your answer. As a double check, calculate 15% of 160 and you get 24, the difference between 136 (85%) and 160 (100%).
340
136
Original Price x .85 = 136 Original price = 136/.85 (If you are allowed to use a calculator, you are done here.) IF not, factor and cancel... 136X100/85 = 2x2x2x17x2x2x5x5/17x5 = 2x2x2x2x2x5 = 32 x 5 = 160 160
To find a percentage you need to firstly divide the number (120) by 100. 120 / 100 = 1.2 Then you need to times this number by the percent needed (85). 1.2 x 85 = 102 Therefore 85% of 120 is 102.
25% of 85 equals 85*0.25 or 85/4. The answer is 21.25.
To find 85 percent of a number, multiply the number by 0.85. In this instance, 0.85 x 2000 = 1700. Therefore, 85 percent of 2000 is equal to 1700.
To find 85 percent of a number, multiply the number by 0.85. In this instance, 0.85 x 360 = 306. Therefore, 85 percent of 860 is equal to 306.