10% + 10% = 20%
The numbers are: 21 and -10
-1
In math, you can convert the decimal INTO a percent, and vice-versa.
3/10 is 30% 21% is 21% 0.34 is 34%
21*.1=2.1
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.
8.4
When the "factors" of a number are listed, the list is usually restricted to positive factors. Then there would be no answer to the question, because no group of positive numbers can add up to make zero.
To find 80 percent of a number, multiply by 0.8. In this instance, 0.8 x 21 = 16.8. Therefore, 80 percent of 21 is equal to 16.8.
0.21
20 + 1
13/21 is roughly equal to .619, or 61.9%