Answer the following 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?
Step-by-step reasoning process: 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.

Answer the following question.
On a highway, the total number of vehicles passing is 300. If the number of cars on the highway is twice the number of trucks, find out the total number of trucks on the highway?
Step-by-step reasoning process: If we assume that the number of trucks on the highway is t, the number of cars on the highway will be 2 * t = 2t. The total number of cars and trucks on the road is 2t + t = 300. The number of vehicles on the road is 3t = 300. The are t = 300 / 3 trucks on the highway. This means there are t = 100 trucks on the road.
The answer is 100.

Answer the following question.
Alan counted how many chairs the office canteen has. It has 2 round tables and 2 rectangular tables. Each round table has 6 chairs, and each rectangular table has 7 chairs. How many chairs are there in all?
Step-by-step reasoning process: The number of chairs at the round tables is 2 tables × 6 chairs / table = 12. The number of chairs at rectangular tables is 2 tables × 7 chairs / table = 14. There are 12 chairs + 14 chairs = 26 chairs in the canteen.
The answer is 26.

Answer the following question.
Lyra bought a pair of shoes at a 20% discount. If she paid $480, how much was the original price of the pair of shoes?
Step-by-step reasoning process: Lyra only paid $480 for the pair of shoes which is only 100% - 20% = 80% of the original price. So let x be the original price. Then 0.8x = $480. Thus x = $480 / 0.8 = $600.
The answer is 600.