Question

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

The probability of randomly choosing a blue marble is
1/8. 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

There are 7 red marbles

Explanation:

1/8=x/56

x= 56/8

x= 7