Question: Last week, Charles bought a t-shirt for $30, a backpack for $10, and a blue cap for $5. The store gave him a discount and, in total, he only spent $43. How much of a discount did they give him, in dollars?
Answer with step-by-step thinking: The purchases he made totaled $30 + $10 + $5 = $45. He should pay $45, but he only paid $43, so $45 - $43 = $2 was the discount they gave him.
So the answer is 2.


Question: James finds 3 bills in his pocket. They are all 20s. If he already had $75 in his wallet how much money doe he have now?
Answer with step-by-step thinking: He found 3 * 20 = $60. So now he has 60 + 75 = $135.
So the answer is 135.


Question: Matt needs to buy new plates for his home. He only wants to do dishes once a week. Three days a week it is only him and his son eating and they use 1 plate each. On the remainder of the days, his parents join them and everyone uses 2 plates that day. How many plates does he need to buy?
Answer with step-by-step thinking:
So for 3 of the days, there are 1 + 1 = 2 people eating. So for those days they use 3 * 2 = 6 plates. On 7 - 3 = 4 days the parents join them. On those days there are 2 + 2 = 4 people eating. They use 4 * 2 = 8 plates. So they use 8 * 4 = 32 plates. That means they use a total of 32 + 6 = 38 plates.
So the answer is 38.