Answer:
20
Explanation:
15 divided by 3 is 5 so y equals 4 times 5 equaling 20
hope this helps
This is a point giveaway? Lol
Answer:

Explanation:
Given


Required
Determine P(B)
If A and B are independent, then:

Substitute values for P(A) and P(A n B)

Make P(B) the subject

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