Math 6A, Lesson 9, Spring 2017, 4/23/2017
1. Go over quiz with students, one by one.
2. Review rate and ratio word problems: unit rate, rate unit conversion, average rate, etc. Class work two pages. Go over each problem one by one.
3. Reverse Percentage
- In a box, 15% of the balls are green. If there are 54 green balls, find the number of balls in the box.
- In the library, the fine for not returning a book on loan is 125% of the price of the book. If the fine for a book that was not returned was $90, find the price of the book.
4. Home Work:
- Handout one page
- Page 40: 8
- Page 41: 14, 15, 16, 17
- Redo the problems in last quiz if your score is under 32/40 (80%)