Answer the following question.
Greg has lent his sister Tessa money on several occasions. Greg writes down all of his sister's debts in a notebook, the first time he lent her $40. A week later, Tessa paid him back half of her debt. A few days later she asked him for $10 more. How much does Tessa still owe Greg?
Step-by-step reasoning process: After Greg lent her $40, Tessa paid him back 40 / 2 = $20. So Tessa's debt was 40 - 20 = $20. Finally, she asked for $10 more, leaving the debt at 20 + 10 = $30.
The answer is 30.

Answer the following question.
Jessica was trying to win a gift card to her favorite store. To win, she had to guess the total number of red & white jelly beans in the bowl of mixed color jelly beans. She figured it would take three bags of jelly beans to fill up the fishbowl. She assumed that each bag of jellybeans had a similar distribution of colors in each bag. She bought one bag of jellybeans and separated them by color. She had 24 red, 13 black, 36 green, 28 purple, 32 yellow and 18 white. What was Jessica's guess as to how many red and white jelly beans were in the fishbowl?
Step-by-step reasoning process: We know she counted 24 red jelly beans and 18 white jelly beans so 24 + 18 = 42 jelly beans. Even though she only bought 1 bag of jellybeans, she thought it would take 3 bags to fill up the bowl. So 3 bags * 42 jellybeans = 126 total red & white jellybeans.
The answer is 126.

Answer the following question.
Julia had to make 6 cakes for the party. Each cake takes 12 minutes to mix and needs 9 more minutes to bake than mix. Then it takes 6 more minutes to cool and decorate than to bake. How many hours will it take to make all 6 cakes?
Step-by-step reasoning process: It takes 12 + 9 = 21 minutes to bake each cake. It takes 21 + 6 = 27 minutes to cool and decorate each cake. Therefore, it takes a total of 12 + 21 + 27 = 60 minutes to make one cake. Thus, it takes 60 / 60 = 1 hour to bake one cake. So, it will take 1 x 6 = 6 hours to bake all 6 cakes.
The answer is 6.

Answer the following question.
A man divides 3 hectares of land evenly among his 8 sons. If every 750m^2 of this land can be used to make a profit of $500 from every 3 months of commercial farming, how much can each son make if they cultivate their share of the land for one year(1 hectare is equal to 10000 m^2)?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Step-by-step reasoning process: There are 10000m^2 in each hectare, so 3 hectares contains 3 * 10000 = 30000m^2 of land. 30000m^2 is divided among 8 sons so each son will get 30000 / 8 = 3750m^2. In every 3750m^2, there are 3750 / 750 = 5 portions of 750m^2 areas of land. Each son can make 5 * $500 = $2500 every 3 months from cultivating their share. In one year there are 12 months so each son can make $2500 up to 12 / 3 = 4 times in a year. Each son can make a total of $2500 * 4 = $10000 in a year.
The answer is 10000.