A birthday party caterer counted the number of juice cups on the table. The cups contained different flavored juices and different shaped straws. Heart-shaped straw Star-shaped straw 3 4 Orange juice Grape juice 2 1 What is the probability that a randomly selected cup contains orange juice and contains a star-shaped straw? Simplify any fractions.
According to the picture, to find that probability, the first step is to find the total number of juice cups. To do it find the sum of the values in a row or in a column and then find the sum of these , for example:
