Math 6A, Lesson 9, Spring 2017, 4/23/2017

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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%)