A recipe for chili for 20 people requires 4 pounds of beans. At this rate, how many pounds of beans are required to make chili for 150 people?
Answer 30 pounds
Level of Difficulty E
This problem can be solved with a simple proportion:
In words, 20 people is to 4 pounds as 150 people are to how many pounds? As an equation,
20/4 = 150/x.
After cross-multiplying, you get
20x = 600
After dividing both sides by 20, you find out that x = 30 pounds of beans. You would enter 30 into the grid.
For more practice with proportions, go to Skill Set 3: Fractions, Proportions, and Inverse Relations.
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