Middle School:
Question: The ratio of apples to oranges in a box is 7:18. What is the percent chance that a fruit drawn at random from the box will be an orange?
Answer: 72%
Solution: There are 7+18=25 fruits in the box. Since 18 out of 25 fruits are oranges and a percentage is out of 100, we can multiply 18 and 25 each by 4 to find the number of fruits out of 100 that are oranges. 18x4=72, so 72% of the fruits are oranges. If one is chosen at random, then the percent chance that it'll be an orange is 72%.
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