please show me the decision tree, solution and interpretation

2) A local transportation company decided to offer direct service from Whistler to downtown Vancouver. Management must decide between a full-price service using the company's new fleet of full capacity bus and a discount service using smaller capacity vans. It is clear that the best choice depends on the market reaction to the service they offer. Management developed estimates of the contribution to profit for each type of service based upon two possible levels of demand for service to downtown Vancouver strong and weak. The following table shows the estimated monthly profits (in dollars): Demand for service Service Strong Weak Full Price -50 Discount 270 350 30