Brenda catches smallpox. She has 60 blisters on each arm and 80 blisters on the rest of her body. How many blisters does she have in total? Give the rationale and then the answer.
Let's think step by step. First find the total number of blisters on Brenda's arms: 60 blisters / arm * 2 arms = 120 blisters. Then add the blisters on the rest of her body to find the total: 120 blisters + 80 blisters = 200 blisters.. The answer is: 200.

Layla is feeding her pet fish. She has two Goldfish which each get one teaspoon of fish food. Her 3 Swordtails each get 2 teaspoons of food. Her 8 Guppies each eat half a teaspoon of food. How much food does she have to give to her fish in total? Give the rationale and then the answer.
Let's think step by step. The two Goldfish eat a total of 2 * 1 = 2 teaspoons of food. The 3 Swordtails eat a total of 3 * 2 = 6 teaspoons of food. The 8 Guppies eat a total of 8 * 1 / 2 = 4 teaspoons of food. In total, all of her fish eat 2 + 6 + 4 = 12 teaspoons of fish food.. The answer is: 12.

Denver uses 7 pieces of wood for each birdhouse and he pays $1.50 for each piece of wood. If he makes a $5.50 profit per birdhouse, how much will Denver charge to Danny for buying two birdhouses? Give the rationale and then the answer.
Let's think step by step. The cost for making one birdhouse is $1.50 x 7 = $10.50. So the selling price of one birdhouse is $10.50 + $5.50 = $16. Thus, Denver will charge Danny $16 x 2 = $32 for the two birdhouses.. The answer is: 32.