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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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If the above circle graph were drawn to scale, then which of the following is closest to the difference in the degree measurements of the central angle of the sector representing Brand C and the central angle of the sector representing Brand D?
A. 5°
B. 12°
C. 18°
D. 25°
E. 43°
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Posts: 16,394
OE
The central angle of the sector representing Brand C is 12% of 360°: (0.12) × 360° = 43.2°
The central angle of the sector representing Brand D is 7% of 360°: (0.7) × 360° = 25.2°
Finally, 43.2° – 25.2° = 18°
**Note this can be done in one step by noticing that the percentage difference between Brands C and D is 5% and 5% of 360 is (0.05) × 360 = 18.
Answer: C
The central angle of the sector representing Brand C is 12% of 360°: (0.12) × 360° = 43.2°
The central angle of the sector representing Brand D is 7% of 360°: (0.7) × 360° = 25.2°
Finally, 43.2° – 25.2° = 18°
**Note this can be done in one step by noticing that the percentage difference between Brands C and D is 5% and 5% of 360 is (0.05) × 360 = 18.
Answer: C
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