John is trying to decide how to divide his time between his job as a stocker in the local grocery store, which pays $7 per hour for as many hours as he chooses to work, and cleaning windows for the businesses downtown. He makes $2 for every window he cleans. John is indifferent between the two tasks, and the number of windows he can clean depends on how many hours he spends cleaning in a day, as shown in the accompanying table.
The first hour John spends cleaning windows costs him ________ that he could have earned in the grocery store.
A)$2
B)$7
C)$14
D)$18

Question

John is trying to decide how to divide his time between his job as a stocker in the local grocery store, which pays $7 per hour for as many hours as he chooses to work, and cleaning windows for the businesses downtown. He makes $2 for every window he cleans. John is indifferent between the two tasks, and the number of windows he can clean depends on how many hours he spends cleaning in a day, as shown in the accompanying table.   
The first hour John spends cleaning windows costs him ________ that he could have earned in the grocery store.
A)$2 
B)$7 
C)$14 
D)$18

Quizplus · Accepted Answer

John is paid $7 per hour at the grocery store.

John Is Trying to Decide How to Divide His Time