Hopefully this will help you.
Answer:
p = 15/40
Step-by-step explanation:
Since the total number of marbles is 40, that is our size of the sample. there are 16 red ones on that sample, so the probability of extracting a red marble from the box is given by the ratio of successes divided the total number of marbles:
p = 15/40
<span>(12x + 8) /4
= [12(2) + 8] / 4
= (24 + 8)/4
= 32/4
= 8
answer
</span><span>D) 8</span>