Consider the Q and A. Q: Dorothy spent $53 to buy doughnut ingredients. If she made 25 doughnuts and sells each for $3, how much was her profit?
A: 22
What is the step-by-step reasoning process?
Step-by-step reasoning process: She was able to earn 25 x $3 = $75 for the doughnuts. Therefore, Dorothy's profit is $75 - $53 = $22.

Consider the Q and A. Q: Tonya is buying Christmas gifts for her sisters. She has 2 sisters and wants to spend the exact same amount on each. She buys her younger sister 4 dolls that cost $15 each. She plans to buy lego sets for her older sister. They cost $20 each. How many lego sets does she buy?
A: 3
What is the step-by-step reasoning process?
Step-by-step reasoning process: She spent $60 on her younger sister because 4 x 15 = 60. She buys 3 lego sets for her older sister because 60 / 20 = 3.

Consider the Q and A. Q: For Roger's phone to function optimally, he can have a maximum of 50 apps on his phone. However, the recommended number of apps is 35. If Roger has twice the recommended number of apps, how many apps must he delete for his phone to function optimally again?
A: 20
What is the step-by-step reasoning process?
Step-by-step reasoning process: Roger has 35 x 2 = 70 apps on his phone. He needs to delete 70 - 50 = 20 apps.

Consider the Q and A. Q: Tim has 30 less apples than Martha, and Harry has half as many apples as Tim. If Martha has 68 apples, how many apples does Harry have?
A: 19
What is the step-by-step reasoning process?
Step-by-step reasoning process:
Tim has 68 - 30 = 38 apples. Harry has 38 / 2 = 19 apples.