Answer this question:Iris’ family is planning a surprise birthday party for her. The party will include her 3 uncles and 4 aunts who have a son and daughter each as well as her brother and mother. In total, how many people are coming to Iris’ birthday party?
Each of her aunts and uncles have a family unit of 1 son + 1 daughter + 1 aunt / uncle = 3 people. Iris has a total of 3 uncles + 4 aunts = 7 aunts or uncles in these family units. So among her aunts, uncles, and cousins, there will be 7 family units * 3 people in each family unit = 21 people. Including her mother and brother, there will be a total of 21 people + 1 mother + 1 brother = 23 people coming to her party.
The answer is 23.

Answer this question:Julia bought 3 packs of red balls, 10 packs of yellow balls, and 8 packs of green balls. There were 19 balls in each package. How many balls did Julie buy in all?
The total number of packages is 3 + 10 + 8 = 21. Julia bought 21 × 19 = 399 balls.
The answer is 399.

Answer this question:Lena played video games for 3.5 hours last weekend. Her brother played 17 minutes more than she did. How many minutes together did Lena and her brother play video games last weekend?
Lena = 3.5 hours = 210 minutes. Brother = 210 + 17 = 227 minutes. 210 + 227 = 437 minutes. Together, Lena and her brother played 437 minutes of video games.
The answer is 437.

Answer this question:Mason, Noah and Jacob want to have an eating contest but can't agree on what food to eat. Mason wants hot dogs, Noah insists on burgers, and Jacob thinks they should eat pies. They finally agree that everyone can eat whatever they want and they'll use the weight of the food to determine who wins. A hot dog weighs 2 ounces, a burger weighs 5 ounces, and a pie weighs 10 ounces. Jacob eats three fewer pies than Noah eats burgers. Mason eats 3 times as many hotdogs as the number of pies consumed by Jacob. If Noah ate 8 burgers, what is the total weight of the hotdogs that Mason ate?

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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Jacob ate 8 – 3 = 5 pies. Noah ate 5 * 3 = 15 hotdogs. The total weight of the hotdogs was 15 * 2 ounces = 30 ounces.
The answer is 30.