SAT Math Multiple Choice Question 730: Answer and Explanation

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Question: 730

10. Images

The pie graph above represents the monthly ad sales for four salespeople-Maria, Eli, Georgia, and Zoe-at a social media website. For the month, Maria's sales accounted for 25% of the total, Eli had $3,000 in sales, Georgia had $5,000 in sales, and Zoe had $10,000 in sales.

What is the sum of the monthly sales for all four salespeople?

  • A. $22,500
  • B. $24,000
  • C. $25,000
  • D. $27,000

Correct Answer: B

Explanation:

B

Data Analysis (pie graph) MEDIUM

Perhaps the simplest way to approach this is to notice that, since Maria's sales account for 25% of the total, the other salespeople must account for 100% - 25% = 75% of the total. Since this total is $3,000 + $5,000 + $10,000 = $18,000, we can find the total with a proportion.

images

Cross multiply:

$1,800,000 = 75x

Divide by 75:

$24,000 = x

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