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Attempts Keep the Highest $/1$

$3.$ Evaluating opportunity costs

Crystal and Brian need to decide which one of them will take time off from work to complete the rather urgent task of digging postholes for the fence. Crystal is pretty good with a post auger; she can dig the holes in $30$ minutes. Brian is somewhat slow; it takes him $5$ hours to dig the hol Crystal earns $$160$ per hour as a lawyer, while Brian earns $$20$ per hour as a barber.

Keeping in mind that either Crystal or Brian must take time off from work to dig the holes, who has the lowest opportunity cost of completing th task?

Crystal and Brian face equal opportunity costs

Brian

Crystal