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11-10-2020
Mathematics

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Lina has a total of 72 blue and red marbles in a box. The probability of choosing a blue marble at random from the box is 4/9

Find the number of blue marbles added if the probability of choosing a blue marble is 3/5

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linkinbasant linkinbasant

11-10-2020

Answer:

28

Step-by-step explanation:

probability of getting blue ball is 4/9

total cases = 72

i.e number of blue ball 32

number of red vall is 40

so extra 28 is added

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