There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue marble is 1/9 There are 45 ma rbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.
1 answer:
Answer:
40
Step-by-step explanation:
Since the probability to choose a blue marble is 1/9, there must be 5 blue marbles since 45 * 1/9 = 5
Subtract 5 from 45 to get 40, since the rest of the marbles are red.
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