Answer the following question.
Dorothy spent $53 to buy doughnut ingredients. If she made 25 doughnuts and sells each for $3, how much was her profit?
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.
The answer is 22.

Answer the following question.
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?
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.
The answer is 3.

Answer the following question.
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?
Step-by-step reasoning process: Roger has 35 x 2 = 70 apps on his phone. He needs to delete 70 - 50 = 20 apps.
The answer is 20.

Answer the following question.
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?
Step-by-step reasoning process: Tim has 68 - 30 = 38 apples. Harry has 38 / 2 = 19 apples.
The answer is 19.