Question: Jason waits on a customer whose check comes to $15.00. Jason's state applies a 20% tax to restaurant sales. If the customer gives Jason a $20 bill and tells him to keep the change, how much is Jason's tip?
Answer with step-by-step thinking: First calculate how much the tax is by multiplying $15.00 by 20%: $15.00 * .2 = $3.00. Then subtract the cost of the meal and the tax from $20 to find Jason's tip: $20 - $15.00 - $3.00 = $2.00.
So the answer is 2.


Question: The total number of years in a century is the same as the number of marbles Gideon has. If he gives 3/4 of the marbles to his sister and multiples the number of remaining marbles by 2, he gets his age five years from now. How old is Gideon now?
Answer with step-by-step thinking: A century has 100 years, and if Gideon has as many marbles as the number of years in a century, he has 100 marbles. If he gives 3 / 4 of the marbles to his sister, he gives out 3 / 4 * 100 = 75 marbles. Gideon's total number of marbles remaining after giving 3 / 4 of the marbles to his sister is 100 - 75 = 25. When he multiplies the number of remaining marbles by 2, he gets his age five years from now, meaning he will be 25 * 2 = 50 years old five years from now. Currently, Gideon is 50 - 5 = 45 years old.
So the answer is 45.


Question: Mark has 30 candies, Peter has 25 candies, and John has 35 candies. They decided to combine their candies together and share them equally. How many candies will each one of them have?
Answer with step-by-step thinking:
The total number of the candies is 30 + 25 + 35 = 90. When the candies are shared equally each one will get 90 / 3 = 30.
So the answer is 30.