Answer: John
Explanation:
The quantity of each leftover ingredient was:
¼ cinnamon = 0.25
⅓ nutmeg = 0.33
½ ginger = 0.5
⅝ pumpkin = 0.625
Since Quincy used the most ingredients, she must have used the ingredient with the lowest leftover: cinnamon.
On the other hand, since Lucy used the least amount, the ingredient she used must be pumpkin, because it has the highest leftover.
That leaves us with ginger and nutmeg as the remaining ingredients.
If Prudence used more of her ingredient than John, she must have used the one with the lesser quantity of leftovers: nutmeg.
Therefore, John used Ginger.
