Question: Josette bought 3 bottles of mineral water for €1.50. How much will four bottles cost?
Answer with step-by-step thinking: A bottle costs 1.50 € / 3 = 0.50 €. So, four bottles cost 0.50 € * 4 = 2 €.
So the answer is 2.


Question: Sam the butcher made sausage by grinding up 10 pounds of spicy meat mix, loading it into a tube casing, and creating a string of 40 sausage links. Then, she hung up the string of sausage links in her cooler. Later that evening, Brandy, Sam’s Golden Retriever, broke into the cooler and ate 12 links of sausage. After Brandy’s feast, how many ounces of sausage meat were contained in the remaining links?
Answer with step-by-step thinking: There are 16 ounces in one pound, and thus in 10 pounds of meat mix there are 10 * 16 = 160 ounces of sausage meat. Thus, the 40 sausage links contained 160 ounces of meat, or 160 / 40 = 4 ounces per link. If Brandy ate 12 links, then 40 - 12 = 28 links remained. Thus, 28 remaining links, at 4 ounces per link, contained 28 * 4 = 112 ounces of meat.
So the answer is 112.


Question: An auto shop buys tires to replace all the tires on every customer’s car. They buy the tires as soon as cars are brought into the shop. There are four cars in the shop already, and another six customers come into the shop throughout the week. Some of the customers decide they don't want any of the tires changing, and two customers decide they only want half the tires changing. They had no tires in stock at the start of the week. If the shop has 20 tires left at the end of the week, how many customers decided they did not want their tires changing?
Answer with step-by-step thinking:
A total of 4 + 6 = 10 cars are in the shop throughout the week. This means the shop buys 10 cars * 4 tires = 40 tires. For each of the customers that only want half the tires changing, there are 4 tires * 0.5 = 2 tires left over. Two of the customers only want half the tires changing, so there are 2 tires * 2 cars = 4 tires left over from these customers. Out of the remaining tires, there are 20 – 4 = 16 tires left from customers who don't want their tires changing. So in total, there were 16 tires / 4 tires per customer = 4 customers who did not want their tires changing.
So the answer is 4.