Question: Danny made chocolate cookies for his class and made sure each cookie had exactly 7 chips. He made 4 dozen in total. If the class eats half the cookies, how many chips are left uneaten?
Answer with step-by-step thinking: There are 48 cookies because 12 x 4 = 48. There are 24 cookies left because 48 / 2 = 24. There are 168 chips left because 24 x 7 = 168.
So the answer is 168.

Question: Harry is 50 years old. His father is currently 24 years older than he is. How old was his mother when she gave birth to him if she is younger than his father by 1/25 of Harry's current age?
Answer with step-by-step thinking: Harry's father is 50 years + 24 years = 74 years old. Harry's mother is 1 / 25 * 50 years = 2 years younger than his father. So she is currently 74 years - 2 years = 72 years old. So when Harry was born, she was 72 years - 50 years = 22 years old.
So the answer is 22.

Question: Mark is baking bread. He has to let it rise for 120 minutes twice. He also needs to spend 10 minutes kneading it and 30 minutes baking it. How many minutes does it take Mark to finish making the bread?
Answer with step-by-step thinking:
First find the total rise time: 120 minutes * 2 = 240 minutes. Then add the rise time to the baking and kneading time: 240 minutes + 10 minutes + 30 minutes = 280 minutes.
So the answer is 280.