Question 29: Mai uses 25,000 VND to buy a pen. There are two types of pens: Type I costs 2,000 VND each, Type II costs 1500 VND each. How many pens can Mai buy if Mai only buys type II pens?
We have 25000 : 1500 = 16 (remainder 1000)
So Mai can buy at most 16 type II pens