Question

There is a bag with only red marbles and blue marbles.

The probability of randomly choosing a red marble is
5
12
.
There are 72 marbles in total in the bag and each is equally likely to be chosen.
Work out how many red marbles there must be.

Answer 1

5/12 of 72 marbles

5*6

= 30 red marbles

Answer 2

30.

Explanation:

The answer is 5/12 of 72

= 5 * 6

= 30 red marbles.