Question

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 2 9 . There are 45 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

10 red marbles

Explanation:

Total= 45 marbles

Probability of red= 2/9

Number of red= 45*2/9= 10