I am giving out brainliest to the right answerer! Suppose you have a bag if 40 marbles and 20 of them are white. If you choose a marble without looking, the probability that you choose a white marble is 20/40. Describe the probability.
You just described it! You descibe the probability is measured by the measure of one against the whole. 20 is what you are after, and 40 is the total amount, so 20/40, or 1/2, is correct.