Question: Betty has a tray of cookies and a tray of brownies. She has a real sweet tooth and eats 3 cookies a day and 1 brownie a day. If she starts with 60 cookies and 10 brownies, how many more cookies than brownies does she have after a week of eating like this?
Answer: First we find how many cookies Betty will eat in a week by multiplying her daily amount by 7, meaning 7 * 3 = 21 cookies eaten in a week. We repeat this for the brownies, finding she eats 7 * 1 = 7 brownies in a week. We subtract the 21 cookies from the original amount of 60, finding 60 - 21 = 39 cookies remaining. We repeat this step for the brownies, finding 10 - 7 = 3 brownies remaining. In the end, therefore, Betty has 39 - 3 = 36 more cookies than brownies. The answer is 36.

Question: The height of the tree in Kilmer Park is 52 feet. Each year it grows 5 feet. In 8 years, what will the height of the tree be in inches, assuming 1 foot is 12 inches.
Answer: In 8 years, the tree will have grown 5 * 8 = 40 feet. In 8 years, the tree will be 52 + 40 = 92 feet. In 8 years, the tree will be 92 * 12 = 1104 inches. The answer is 1104.

Question: Ethyl bought Lucy two new dolls for her doll collection. This increased the doll collection by 25%. After the addition of the two new dolls, how many dolls are in Lucy's collection?
Answer: Let's let "x" be the original number of dolls in Lucy's doll collection. Then, 2 dolls equals an increase of 25%, and this can be written as x * 0.25 = 2. Solving for x we get x = 2 / 0.25 = 8 dolls in Lucy's original collection. After the gift of two new dolls, Lucy's collection contains 8 + 2 = 10 dolls. The answer is 10.

Question: Carla's brush is 12 inches long. If Carmen's brush is 50% longer than Carla's brush, how long is Carmen's brush in centimeters? (There are 2.5 centimeters per inch.)
Answer:
First find the length of Carmen's brush in inches: 150% * 12 inches = 18 inches. Then convert the length from inches to centimeters: 18 inches * 2.5 centimeters / inch = 45 centimeters. The answer is 45.