The first problem is a "Ratio, Rates, and Proportions" problem. Be sure to answer the question and write down the ratio that best fits the example provided in question 1.
Q1.
Charong has 21 cousins. If 12 of Charong's cousins live in the same city as Chardong does, what is the ratio of the number of Charong's cousins who live in the same city as Charong does to the total number of cousins Charong has?
A. 3:7
B. 4:7
C. 4:11
D. 7:4
Answer: B
Explanation: The number of cousins that live in the same city Charong does is 12, and the total number of cousins Charong has is 21. Therefore, the correct ratio of the number of Charong's cousins who live in the same city as Charong does to the total number of cousins Charong has is 12:21. This ratio, by diving both sides of the colon by 3, is equivalent to 4:7. Therefore, B is the correct answer.