Q: At the pet shop, there were 3 birds, 5 dogs, 4 snakes, and 1 spider for sale. How many legs were there in total?
A: The 3 birds have 2 legs each, for a total of 3 * 2 = 6 paws. The 5 dogs have 4 legs each, for a total of 5 * 4 = 20 paws. The 1 snake has no paws, and a spider has 8 legs. The total number of paws is 6 + 20 + 8 = 34. The answer is 34.

Q: Kenneth has $50 to go to the store. Kenneth bought 2 baguettes and 2 bottles of water. Each baguette cost $2 and each bottle of water cost $1. How much money does Kenneth have left?
A: The cost of the baguettes is 2 × $2 = $4. The cost of the water is 2 × $1 = $2. The total cost of the shopping is $4 + $2 = $6. Kenneth has $50 − $6 = $44 left. The answer is 44.

Q: Two days ago, Uncle Welly planted 50 roses on his vacant lot. Yesterday, he planted 20 more roses than the previous day. Today, he planted twice the number of roses than two days ago. How many roses did Uncle Welly plant in his vacant lot?
A:
Yesterday, Uncle Welly was able to plant 50 + 20 = 70 roses. Today, he planted 2 x 50 = 100 roses. Therefore, Uncle Welly has 50 + 70 + 100 = 220 roses planted on his vacant lot. The answer is 220.