Ratios and proportional relationships
Ratios, rates, units, and percentages · Stage 1
Recognize the pattern
Keep the ratio constant when quantities scale proportionally.
Useful rulea/b=c/d
Try it before reading the solution
A recipe uses 2 cups of rice for 5 servings. How many cups for 15 servings?
This teaching example is original and is not an official SAT question.
Reasoning
15 is 3 times 5, so rice is 3 times 2.
Answer6 cups
03 · Next step
See membership →Ready for adaptive practice
Practice questions remain in English, as on the SAT.