Consider the Q and A. Q: Zach was a waiter in a fancy restaurant. His last table for the night was a party for 4 people. The mom ordered lobster for $25.50, the dad ordered steak for $35.00 their twin boys both ordered a cheeseburger and fries for $13.50 each. They started their meal with an appetizer that cost 8.50. Everyone also ordered a dessert that cost $6.00 each. They wanted to give a 20% tip for Zach on the bill. What did the final bill total come to?
A: 144
What is the step-by-step reasoning process?
Step-by-step reasoning process: The twins ordered a cheeseburger each so 2 * 13.50 = $27.00 for both cheeseburgers. Everyone ordered a dessert so 4 * 6 = $24.00 for dessert. When you add all the meals together they spent 25.50 + 35.00 + 27.00 + 8.50 + 24.00 = $120.00. Zach's tip was 20% so .20 * 120.00 = $24.00. When you add up the meals $120.00 and Zach's tip of $24.00 then the total cost is 120.00 + 24.00 = $144.00.

Consider the Q and A. Q: When Matty was born, the cost of a ticket to Mars was $1,000,000. The cost is halved every 10 years. How much will a ticket cost when Matty is 30?
A: 125000
What is the step-by-step reasoning process?
Step-by-step reasoning process: First find the total number of times the cost is halved: 30 years / 10 years / halving = 3 halvings. Then halve the cost once: $1,000,000 / 2 = $500,000. Then halve the cost a second time: $500,000 / 2 = $250,000. Then halve the cost a third time: $250,000 / 2 = $125,000.

Consider the Q and A. Q: There are 100 students in class and the ratio of boys to girls is 3:2. How many more boys than girls are there?
A: 20
What is the step-by-step reasoning process?
Step-by-step reasoning process: The class was divided into 3 + 2 = 5 parts. So each part is equal to 100 / 5 = 20 students. Since there are 3 parts for boys, then there are 20 x 3 = 60 boys in class. So there are 100 - 60 = 40 girls in class. Hence, there are 60 - 40 = 20 boys more than girls.

Consider the Q and A. Q: James replaces the coffee for the household. There are 3 other people in the house and everyone drinks 2 cups of coffee a day. It takes .5 ounces of coffee per cup of coffee. If coffee costs $1.25 an ounce, how much does he spend on coffee a week?
A: 35
What is the step-by-step reasoning process?
Step-by-step reasoning process:
There are 3 + 1 = 4 people in the house. So they drink 4 * 2 = 8 cups of coffee a day. That means they use 8 * .5 = 4 ounces of coffee a day. So they use 4 * 7 = 28 ounces of coffee a week. So he spends 28 * 1.25 = $35.