PSAT Math Grid-Ins Question 68: Answer and Explanation
Question: 68
What is the value of b that satisfies 5c + 5b = 20 and 5b - c = 4?
Correct Answer: 4/3 or 1.33
Explanation:
4/3 or 1.33
Difficulty: Medium
Getting to the Answer: Start by isolating c in the second equation: c = 5b - 4. Then, substitute into the first equation and solve:
Grid in 4/3 or 1.33 and move on.
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