Question

how many more cups of hot cocoa did percy sell when the temperature was 30°f than when the temperature was 50°f?

Explanation:

Step1: Find cups at 30°F

At $30^\circ\text{F}$, cups sold = 70

Step2: Find cups at 50°F

At $50^\circ\text{F}$, cups sold = 30

Step3: Calculate the difference

Subtract the two values: $70 - 30 = 40$

Answer:

40