SAT Percentages Practice Question 7 (Easy)

Math · Problem-Solving and Data AnalysisEasy

In a group of $250$ people, $40\%$ are younger than $30$ years old. How many people in the group are NOT younger than $30$ ?

$60$

$100$

$150$

$210$

Show answer and explanation

Answer: C

If $40\%$ are younger than $30$ , then $100\% - 40\% = 60\%$ are not. So $0.60 \times 250 = 150$ people are not younger than $30$ .

Choice B is the number of people who are younger than $30$ , the opposite group.

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