Question

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

The probability of randomly choosing a red marble is
5
8
.
There are 56 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

35 red marbles

Explanation:

since probability for red marbles is 5/8

and they are 56 marbles in the bag

so it will be 5/8 × 56

= 35

so the bag is likely to have 35 red marbles