Ajar contains 20 green, 23 orange, 20 red, and 15 brown marbles. a marble is drawn at random. what is the probability that the marble is orange, green, or red?

total marbles: 20 + 23 + 20 + 15 = 78 marbles

probability of orange: 23/78

probability of green: 20/78

probability of red: 20/78

add up fractions

probability of orange, green or red:

can also simplify to

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i