10 percent of 81 can be written as 20 percent * 81 =
Use the percentage formulae (P% × Y = X) to find out 10% of 81
P is 10, Y is 81, so the equation will be 10% × 81 = X
Percentage calculation with steps:
X = ( 10 * 81 ) / 100
X = 810 / 100
X = 8.1