1.12
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To find 75 percent of a number, multiply the number by 0.75. In this instance, 0.75 x 21 = 15.75. Therefore, 75 percent of 21 is equal to 15.75.
.13(150)=19.5 Answer: 19.5 If you want 13% (this works for any percentage) move the decimal over two places to the left, then multiply the revised number and the number you want a percentage of. Example: Problem: 21% of 795 step1: 21% becomes .21 step2: multiply .21 and 795 The answer to the example problem would be: 166.95
divide by 21
21 is 1.2352 percent of 17. Just in case you mean the opposite: 17 is .809 percent of 21.
Move the decimal in 2.1m one place to the left. You will get .21 m or 21 cm. Or you multiple 10% by 2.1m to get 0.21m. Or you change 10 % into a decimal [10% = 0.10] then multiply by 2.1m