How many quarts of water must be added to 9 qt of an 80% antifreeze solution to make a 45% antifreeze solution?
1 answer:
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Answer:
B. 0.4
Step-by-step explanation:
Use the definition of the probability
You have to find the probability that a randomly selected reference book is hard cover. Hence, from the table
- Number of all possible outcomes = Number of Reference books = 25
- Number of all favorable outcomes = Number of Hardcover Reference books = 10
So, the probability is