Q: Peter carried $500 to the market. He bought 6 kilos of potatoes for $2 per kilo, 9 kilos of tomato for $3 per kilo, 5 kilos of cucumbers for $4 per kilo, and 3 kilos of bananas for $5 per kilo. How much is Peter’s remaining money?
A: The price of potatoes is 6 * 2 = $12. The price of tomatoes is 9 * 3 = $27. The price of cucumbers is 5 * 4 = $20. The price of bananas is 3 * 5 = $15. The total price Peter spent is 12 + 27 + 20 + 15 = $74. The amount left with Peter is $500 - $74 = $426. The answer is 426.

Q: There are 15 cats in a shelter. One-third were adopted, and were replaced with twice the amount that were adopted. Later on, twice as many dogs showed up as there are cats. How many total animals are there in the shelter?
A: 15 / 3 = 5 cats were adopted out of 15. There were 15 - 5 = 10 cats left. 5 * 2 = 10 more cats were added. This makes 10 + 10 = 20 cats in the shelter. 20 * 2 = 40 dogs came into the shelter. There are now 20 + 40 = 60 animals in the shelter. The answer is 60.

Q: A dental office gives away 2 toothbrushes to every patient who visits. His 8 hour days are packed and each visit takes .5 hours. How many toothbrushes does he give in a 5 day work week?
A:
Each day he does 8 / .5 = 16 visits. So he does 16 * 5 = 80 visits a week. That means he gives away 80 * 2 = 160 toothbrushes a week. The answer is 160.