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There is a bag with only red marbles and blue marbles.
The probability of randomly choosing a red marble is 4/9.
There are 32 red marbles in the bag and each is equally likely to be chosen.
Work out how many marbles in total there must be.

Sagot :

jcherry99

Answer:

Step-by-step explanation:

4/9 = 32 / x

Let x be any marble that is not red and the red ones.

Cross Multiply

4x = 9*32

4x = 288             Divide by 4

x   = 288/4

x = 72

So the whole bag contains 72 marbles.

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