Question: There are 3 bicycles, 4 tricycles and 7 unicycles in the garage at Zoe's house. Each bicycle has 2 wheels, each tricycle has 3 wheels and each unicycle has 1 wheel. How many wheels are there in all?
Answer: The number of bicycle wheels is 2 × 3 = 6. The number of tricycle wheels is 3 × 4 = 12. The number of unicycle wheels is 1 × 7 = 7. The total number of wheels is 6 + 12 + 7 = 25. The answer is 25.

Question: Moses and Tiffany want to see who is faster. But instead of a race, they just start running down the block. Tiffany runs 6 blocks in 3 minutes. Moses runs 12 blocks in 8 minutes. What is the speed (defined as blocks per minute) of the runner with the higher average speed?
Answer: Tiffany runs 2 blocks per minute because 6 / 3 = 2. Moses runs 1.5 blocks per minute because 12 / 8 = 1.5. The runner with the highest average speed is Tiffany because 2 > 1.5. The answer is 2.

Question: Carly is a pet groomer. Today, her task was trimming the four nails on dogs’ paws. She trimmed 164 nails, but three of the dogs had only three legs. How many dogs did Carly work on?
Answer: Let N be the number of dogs with 4 legs Carly worked on. All the dogs with 4 legs had 4N paws. There were 3 * 3 = 9 paws on dogs with 3 legs. At 4 nails per paw, she trimmed 164 / 4 = 41 paws. She worked on 4N + 9 = 41 paws. Thus, she worked on 4N = 32 paws on dogs with 4 legs. She worked on N = 32 / 4 = 8 dogs with 4 legs. Thus, Carly worked on 8 + 3 = 11 dogs. The answer is 11.

Question: Phyllis has two gardens. In the first garden, she has 20 plants and 10% are tomato plants. In the second garden, she has 15 plants and 1/3 of these plants are tomato plants. What percentage of all the plants in her two gardens are tomato plants?
Answer:
The first garden has 2 tomato plants because 20 x .1 = 2. The second garden has 5 tomato plants because 15 x (1 / 3) = 5. She has 7 tomato plants in total because 2 + 5 = 7. She has 35 plants in total because 20 + 15 = 35. The proportion of tomato plants is .2 because 7 / 35 = .2. The percentage of tomato plants is 20 because .2 x 100 = 20. The answer is 20.