Lesson 18 Section 4 ## RATIO AND PROPORTION 2 | ||||||

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Example 1. Joan earns $1600 a month, and pays $400 in rent. Express that fact in the language of ratio.
That sentence, or one like it, expresses the ratio of $400 to $1600, of the part that goes for rent to the whole. We are not concerned with the numbers themselves, but only their ratio. Example 2. In Jim's class there are 30 pupils, while in Jane's there are only 10. Express that fact in the language of ratio.
This expresses the ratio of 30 pupils to 10. Example 3. In a class of 24 students, there were 16 B's. Express that fact in the language of ratio.
This expresses the ratio of the Example 10. This month's bill is $75, while last month's was only $30. Express that fact in the language of ratio.
75 is equal to two times 30 (60) with a remainder of 15, which is half of 30. 75 = 60 + 15. 75 is two and a half times 30. The student will hear this language, will read it, and should be able to understand it and speak it.
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