21.5 is 712/3% of 30 .
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To find 10 percent of 215, you can multiply 215 by 0.10 (which is the decimal form of 10 percent). This calculation would be 215 x 0.10 = 21.5. Therefore, 10 percent of 215 is 21.5.
215 - 30 = 185. So, 185 is 30 less than 215.
258 To find a percent of a number, move the decimal place of the percent two places to the left and multiply that by the other number. 20% of 215 is 43 215+43=258
161.25 lbs
The percent of increase from 30 to 39 is: 30%