Answer:
, or 80% probability
Explanation:
To determine probability, we need to know how many "options" there are. There are 2 white spaces, and 8 red spaces, so we have a total of 10 spaces.
Of those 10 spaces, 8 of them are red. As a fraction, this is
, because 8 parts of the total ten are red.
To change this into a percent, we divide and then multiply by 100%.
= .8*100%= 80%
If you don't have a calculator, remember that percepts are just a way to show a portion of 100. If we need to multiply 10 by 10 to get the total 100, we must also multiply the top of the fraction, which gives 80.