Question 25
Stan got some notebooks and pens from a bookstore. The price of a notebook was 7 dollars, and a pen's price was 3 dollars. There was a promotion "Buy 4 notebooks, get 5 pens free". He spent exactly 82 dollars in total and enjoyed the promotion to the fullest such that he got the largest combined number of notebooks and pens. What is the total number of pens (including the free ones) that he got from the bookstore?
Interpretation for this question: The promotion applies once per complete group of 4 purchased notebooks. Free pens cost nothing and are included in the combined total.
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).
Interpretation for this question: The promotion applies once per complete group of 4 purchased notebooks. Free pens cost nothing and are included in the combined total.
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).