1. The Four Seasons - December, 1963 (Oh, What a Night)
Elementary Algebra Lesson 9: Rate of Work
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6. Ingredients 1 1/2 cups sugar 1 1/2 cups packed light brown sugar 1/8 teaspoon salt 3 tablespoons dark corn syrup 1 cup evaporated milk 2 tablespoons butter 1 teaspoon pure vanilla extract 1 1/2 cups pecan halves

7. Pralines

9. Unit 5 – Algebra in Context
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10. Perfect Squares …

11. Rate of Work

12. 1. Fred and Fiona have a house painting business
1. Fred and Fiona have a house painting business. It takes Fiona 3 days to paint a certain house. Fred could paint the same house in 4 days.
How long would it take them to paint the house if Fred and Fiona worked together?

13. 2. Chao, who is an experienced architect, can draw a certain set of plans in 6 h. It takes Carl, who is a new architect, 10 h to draw the same set of plans.
How long would it take them working together to draw the set of plans?

14. 3. Fred can unload a delivery truck in 20 minutes
3. Fred can unload a delivery truck in 20 minutes. Allie can unload a delivery truck in 35 minutes.
How long will the unloading take them if they work together?

15. 4. Suppose the Williams Spring Water Company has two machines that bottle the spring water. Machine X fills the bottles twice as fast as Machine Y. Working together, it takes them 20 min to fill 450 bottles.
How long would it take each machine working alone to fill the 450 bottles?

16. 5. The Ryan Publishing Company has two printing presses
5. The Ryan Publishing Company has two printing presses. It takes the new printing press 45 min to print 10,000 fliers. Together the two presses can print the 10,000 fliers in 30 min.
How long does it take the older printing press by itself to print the 10,000 fliers?