Exhibit $15-4$ Coffee and tea output $($pounds per hour$)$

Maximum Possible Coffee and Tea Production in Brazil & China

$\backslash$table$[[$Country$,$Coffee,Tea$],[$Brazil$,10,5],[$China$,8,8]]$

As shown in Exhibit $15-4,$ the opportunity cost to Brazil of producing one pound of coffee is:

$\frac{1}{2}$ pound of tea.

$10$ pounds of tea.

$5$ pounds of tea.

$1$ pound of tea.