You are thinking about traveling to visit friends in Portland. You can fly or take the bus. A ROUND-TRIP plane ticket costs $300, and it takes three hours to get from your house to your friend’s house if you fly. A ROUND-TRIP bus ticket costs $150 and it takes 10 hours to get door-to-door using the bus. What is the minimum value of your time necessary to induce you to buy the plane ticket instead of taking the bus