Alma has two options to get to her friend's house on the coast. She can either take an Uber or ride the bus. The Uber will cost her $60 and it will take one hour to get to her friend's house. The bus will only cost $10 but it will take her three hours to get to her friend's house. How much does Alma have to value her time per hour to make her willing to use an Uber instead of taking the bus? Provide the the dollar amount below. Do not include a "$" sign