Given that they go from March 31 to April 5, the cost of the double room is $87.50 per day. This makes $87.50/2 = $43.75 per day per person. They spend 5 nights, this makes $43.75*5 = $218.75 per person on the hotel.
At this cost, we need to add the bus trip. Then, the total is $218.75 + $56.89 = $275.64 per person