21 is 20% of 105
Calculation steps:
21 ÷ ( 20 ÷ 100 ) = 105
Formula
21 ÷ ( 20 ÷ 100 )
Percent to decimal
20 ÷ 100 = 0.2
21 ÷ 0.2 = 105 So 21 is 20% of 105
Example