Question: The total cost of Olivia’s groceries was $42. The bananas cost her $12, the bread cost her $9, and the milk cost her $7. The only other groceries she bought were apples. In dollars, how much money did the apples cost her?
Answer: Step-by-step reasoning process: The combined cost of the bananas, bread, and milk was 12 + 9 + 7 = $28. The difference between this and the total is the cost of the apples, which must have therefore cost Olivia 42 – 28 = $14.
So the answer is 14.

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: Step-by-step reasoning process: He found 3 * 20 = $60. So now he has 60 + 75 = $135.
So the answer is 135.

Question: Spot sells cookies in bags and boxes. Each bag has 7 cookies. Each box has 12 cookies. How many more cookies are in 8 boxes than there are in 9 bags?
Answer: Step-by-step reasoning process: The total number of cookies in 8 boxes is 8 boxes * 12 cookies / box = 96 cookies. The total number of cookies in 9 bags is 9 bags * 7 cookies / bags = 63 cookies. There are 96 - 63 = 33 more cookies in the boxes than in the bags.
So the answer is 33.

Question: Marlene wants to buy half a dozen of shirts to avail of the sale. The regular price of a shirt is $50 and is now on sale at a 20% discount. How much will Marlene pay for the shirts?
Answer:
Step-by-step reasoning process: Marlene wants to buy 12 / 2 = 6 shirts. The discount price of the shirt is $50 x 20 / 100 = $10. So, the shirt will only costs $50 - $10 = $40 each. Thus, Marlene will pay $40 x 6 = $240 for the 6 shirts.
So the answer is 240.