Step-by-step reasoning process: Joanna has $8. Joanna's brother has thrice as much as Joanna, so he has $8 * 3 = $24. Her sister has half as much as Joanna, then she has $8 / 2 = $4. Together they have $8 + $24 + $4 = $36 altogether.
[Q & A] The question is Joanna has $8. Compared to her money, her brother has thrice as much while her sister has only half as much. How much money do the three of them have altogether?
The answer is 36

Step-by-step reasoning process: A snake's head is one - tenth its length, which is 1 / 10 * 10 = 1 foot. Since the snake's head is 1 foot, the rest of its body is 10 - 1 = 9 feet long.
[Q & A] The question is A snake's head is one-tenth its length. If a snake is 10 feet long, calculate the length of the rest of its body minus the head.
The answer is 9

Step-by-step reasoning process: The cake has 8 slices * 347 calories = 2776 calories. The brownies have 6 slices * 375 = 2250 calories. The cake has 2776 calories - 2250 = 526 more calories.
[Q & A] The question is A cake has 8 slices and each slice contains 347 calories. A pan of brownies has 6 brownies and each slice contains 375 calories. How many more calories does the cake have?
The answer is 526

Step-by-step reasoning process: He spent an extra 500 - 300 = $200 on the video card. That means the total cost was 1200 + 200 = $1400.
[Q & A]
The question is John buys a gaming PC for $1200. He decides to replace the video card in it. He sells the old card for $300 and buys a new one for $500. How much money did he spend on his computer, counting the savings from selling the old card?
The answer is 1400