Step-by-step reasoning process: Since Calvin loses 10 pounds every month, his total weight loss after one year is 12 * 8 = 96 pounds. Calvin weighs 250 - 96 = 154 pounds after a year of hitting the gym.
The question and answer:
Question and answer: Calvin signed up for a gym training service to lose some pounds. If he weighed 250 pounds to start with and lost 8 pounds every month during the training sessions, what's his weight after one year?
The answer is 154

Step-by-step reasoning process: Training all the dolphins takes 4 * 3 = 12 hours. They want to split the hours equally so each trainer has to train the dolphins for 12 / 2 = 6 hours.
The question and answer:
Question and answer: The local aquarium has 4 dolphins that each require 3 hours of training daily. The aquarium has 2 trainers and they want to split the hours they spend training the dolphins equally. How many hours will each trainer spend training the dolphins?
The answer is 6

Step-by-step reasoning process: When Kendra bought 2 toys, she paid 2 * $20 = $40. Since the price of a hat is $10, when Kendra bought 3 hats, she paid 3 * $10 = $30. The total costs for the hats and wooden toys Kendra bought is $40 + $30 = $70. From the $100 bill, Kendra received change worth $100 - $70 = $30.
The question and answer:
Question and answer:
The price of buying a wooden toy at the new Craftee And Best store is $20, and the cost of buying a hat is $10. If Kendra went to the shop with a $100 bill and bought two wooden toys and three hats, calculate the change she received.
The answer is 30