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fomenos
3 years ago
7

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.
Mathematics
1 answer:
Lyrx [107]3 years ago
3 0

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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