Event Space = {b, f, h}
Sample Space = {a, b, c, d, e, f, g, h}
There are 3 items in the event space out of 8 items in the sample space. Divide the two values to get 3/8
Optionally you can use long division or a calculator to convert to decimal form. Doing so gives 3/8 = 0.375
Also you can convert to percent form if your teacher wants you to. Simply move the decimal point to the right 2 spots to go from 0.375 to 37.5%
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Summary:
Answer in fraction form is 3/8
Answer in decimal form is 0.375
Answer in percent form is 37.5%