During which month was the percentage increase in sales from the previous month the highest?
Answer and solution
Correct answer: C
Solution
Answer: C — October of 2026
1. Read the numbers on the image, not the sector angles: the equal-sized sectors are schematic, not proportional sales shares. The 2025 months Jan–Dec are 120,140,160,50,70,90,80,90,80,150,280,170.
2. The 2026 months Jan–Dec are 250,180,200,100,80,90,120,150,10,150,200,150. Missing values follow from quarter totals: May 2025=210−50−90=70; November 2025=600−150−170=280; December 2026=500−150−200=150.
3. Quarter totals: 2025=420,210,250,600 (annual 1480); 2026=630,270,280,500 (annual 1680). Q 3 2026=120+150+10=280.
Question-specific calculation:
The correct answer is C — October of 2026.
Compare each month with the previous month:
March 2025: February = 140 and March = 160.
Increase = (20 / 140) × 100 = 14.29%.
October 2025: September = 80 and October = 150.
Increase = (70 / 80) × 100 = 87.50%.
October 2026: September = 10 and October = 150.
Increase = (140 / 10) × 100 = 1400%.
March 2026: February = 180 and March = 200.
Increase = (20 / 180) × 100 = 11.11%.
The highest percentage increase is 1400% in October 2026.
Verification: The highest percentage increase is 1400% in October 2026.
1. Read the numbers on the image, not the sector angles: the equal-sized sectors are schematic, not proportional sales shares. The 2025 months Jan–Dec are 120,140,160,50,70,90,80,90,80,150,280,170.
2. The 2026 months Jan–Dec are 250,180,200,100,80,90,120,150,10,150,200,150. Missing values follow from quarter totals: May 2025=210−50−90=70; November 2025=600−150−170=280; December 2026=500−150−200=150.
3. Quarter totals: 2025=420,210,250,600 (annual 1480); 2026=630,270,280,500 (annual 1680). Q 3 2026=120+150+10=280.
Question-specific calculation:
The correct answer is C — October of 2026.
Compare each month with the previous month:
March 2025: February = 140 and March = 160.
Increase = (20 / 140) × 100 = 14.29%.
October 2025: September = 80 and October = 150.
Increase = (70 / 80) × 100 = 87.50%.
October 2026: September = 10 and October = 150.
Increase = (140 / 10) × 100 = 1400%.
March 2026: February = 180 and March = 200.
Increase = (20 / 180) × 100 = 11.11%.
The highest percentage increase is 1400% in October 2026.
G Strategy shortcut
Method: The jump 10→150 is 15-fold. Percentage INCREASE=(15−1)×100=1400%, not 1500%.Verification: The highest percentage increase is 1400% in October 2026.
G Strategy: Method: The jump 10→150 is 15-fold. Percentage INCREASE=(15−1)×100=1400%, not 1500%. Verification: The highest percentage increase is 1400% in October 2026.