Paul paid $25.50 for 3 cups of hot chocolate and 4 cups of hot tea. the cost of each cup of tea was two thirds of the cost of each cup of hot chocolate. how much did each cup of hot chocolate cost?

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.