Probability can be expressed as either a decimal, a percentage or a fraction. But no matter what form it takes, it means the same thing. 1 ⁄ 10, 0.1 and 10% are all different ways of expressing the same probability.
An easy way to convert a percentage to a fraction is to put the number of the percentage over 100 and then simplify: for example, 75% is the same as 75 ⁄ 100, or 3 ⁄ 4. The first two places after a decimal point are the same as a percentage: 0.15 is equal to 15%, and 0.3 is equal to 30%.
Which probability is equal to 25%?
A
5/100
B
1/4
C
25/1
D
4/5
B. 1/4
Explanation: 25% is the same as 25/100, which simplifies to 1/4.