Answer:
To solve the equation, we can use the following formula:
Part/Whole = Percent/100
where Part is the number we're trying to find, Whole is the number we're trying to find the percentage of, and Percent is the percentage we're given.
In this case, we're given that 2.2 is 11% of what number. So we can set up the equation as:
2.2/x = 11/100
where x is the number we're trying to find.
To solve for x, we can cross-multiply and simplify:
2.2/x = 11/100
2.2 * 100 = 11 * x
220 = 11x
x = 220/11
x = 20
Therefore, 2.2 is 11% of 20.