Question

A bag contains:

• 5 red marbles
• 6 blue marbles
• 3 green marbles
• 4 black marbles
• 2 yellow marbles

A marble will be drawn from the bag and replaced 100 times. What is a reasonable prediction for the number of times a green or black marble will be drawn?

Answer 1

35 times

Explanation:

all of them added together is 20 7/20 7x5=35 because 20 goes into 100 5 times

Answer 2

35/100

Explanation:

P(green or black) = 3/20 + 4/20 = 7/20

7/20 = 35/100