Question

A marble is drawn at random from the bag shown below. The bag contains 3 green, 4 yellow, 5 blue, and 8 pink marbles.What is the probability that the marble drawn is a green or blue?

Answer 1

total = 3+4+5+8 = 20
probability that the marble drawn is a green or blue is 8/20 = 2/5

Answer 2

3 + 4+ 5+8 = 20 total marbles

3 green +5 blue = 8 marbles

probability = 8/20 reduces to 2/5