Emmy and Gerry have a total of $200 + $100 = $300. Therefore, Emmy and Gerry can buy $300 / $2 = 150 apples altogether.
The answer: 150
Reverse engineering the question: A fruit stand is selling apples for $2 each. Emmy has $200 while Gerry has $100. If they want to buy apples, how many apples can Emmy and Gerry buy altogether?

Sam is currently 18 / 3 = 6 years old. Sue is currently 6 / 2 = 3 years old. In three years, Sue will be 3 + 3 = 6. In three years, Same will be 6 + 3 = 9. In three years, Kendra will be 18 + 3 = 21. Their total age in three years is 6 + 9 + 21 = 36.
The answer: 36
Reverse engineering the question: Sam is twice as old as Sue. Kendra is 3 times as old as Sam. If Kendra is currently 18, what will be their total age in 3 years?

From the first set of meals, the restaurant earned 10 meals * $8 = $80. From the second set of meals, the restaurant earned 5 meals * $10 = $50. From the third set of meals, the restaurant earned 20 meals * $4 = $80. In total, the restaurant earned $80 + $50 + $80 = $210.
The answer: 210
Reverse engineering the question: A restaurant is counting their sales for the day. They sold 10 meals at $8 each, 5 meals at $10 each, and 20 meals at $4 each. In dollars, how much money did the restaurant make throughout the day?

In the afternoon, she baked 20 + 15 = 35 cupcakes more cupcakes. Therefore, she baked a total of 20 + 35 = 55 cupcakes.
The answer: 55
Reverse engineering the question:
Ivy baked 20 cupcakes in the morning and fifteen more cupcakes in the afternoon than in the morning. How many cupcakes did she bake?