Suppose that a worker in Country A can make either 10 iPhones or 5 iPads each year. Country A has 100 workers. Suppose a worker in Country B can make either 2 iPhones or 10 iPads each year. Country B has 200 workers. Which of the following is a bundle of goods that Country A could not make?
A) (250 iPhones, 250 iPads)
B) (400 iPhones, 250 iPads)
C) (500 iPhones, 250 iPads)
D) (500 iPhones, 300 iPads)

Question

Quizplus · Accepted Answer

In Country A, each worker can produce either 10 iPhones or 5 iPads, so with 100 workers, they can produce at most 1000 iPhones or 500 iPads. In Country B, each worker can produce either 2 iPhones or 10 iPads, so with 200 workers, they can produce at most 400 iPhones or 2000 iPads. 
Option D requires 500 iPhones and 300 iPads, but Country A cannot produce more than 1000 iPhones and 500 iPads in total. Therefore, Country A could not make bundle D.

Suppose That a Worker in Country a Can Make Either