[Question]: Steven's teacher sends the class an assignment to collect 60 different fruit seeds. Apples average 6 seeds, pears average 2 seeds, and grapes average 3 seeds. Steven has set aside 4 apples, 3 pears, and 9 grapes to extract their seeds. How many more seeds does he need to fulfill his assignment?
[Answer]: With 4 apples, Steven will collect 4 apples * 6 seeds / apple = 24 seeds. With 3 pears, Steven will collect 3 pears * 2 seeds / pear = 6 seeds. With 9 grapes, Steven will collect 9 grapes * 3 seeds / grape = 27 seeds. In total, Steven will collect 24 seeds + 6 seeds + 27 seeds = 57 seeds. To collect 60 seeds he needs 60 seeds - 57 seeds = 3 more seeds.
So the answer is 3.

[Question]: Anderson makes mud masks for spa treatments. In every batch of mud that he mixes, he adds three sprigs of mint, and he adds two green tea leaves for every sprig of mint. He had to switch to a different kind of mud, which makes the other ingredients he adds half as effective. How many green tea leaves should Anderson add to a new batch of mud to get the same efficacy as before?
[Answer]: Anderson adds 3 * 2 = 6 green tea leaves in every batch of mud. They are half as effective in the new mud, so Anderson should ad 6 * 2 = 12 green tea leaves to get the same efficacy as before.
So the answer is 12.

[Question]: Kevin has a shoebox filled with toads. Every day, Kevin feeds each toad 3 worms. It takes Kevin 15 minutes to find each worm. If it takes Kevin 6 hours to find enough worms to feed all of his toads, how many toads does Kevin have in his shoebox?
[Answer]:
If it takes 15 minutes to find each worm, then he catches 60 / 15 = 4 worms per hour. In 6 hours, Kevin catches 4 * 6 = 24 worms. If he feeds each toad 3 worms, then he has 24 / 3 = 8 toads in his shoebox.
So the answer is 8.