To determine which paint was used the most and which paint was used the least, we need to compare the amounts of each paint color. Here are the amounts in decimal form for easier comparison:
- White: \( \frac{1}{2} = 0.5 \)
- Yellow: \( \frac{1}{4} = 0.25 \)
- Green: \( \frac{2}{5} = 0.4 \)
- Blue: \( \frac{7}{12} \approx 0.5833 \)
- Red: \( \frac{1}{8} = 0.125 \)
- Black: \( \frac{5}{6} \approx 0.8333 \)
From the above decimal conversions, we can see:
- Most Paint Used: Black \( (0.8333) \)
- Least Paint Used: Red \( (0.125) \)
Therefore, the correct response is:
They used black the most and red the least.