Tim and Maria went on a cruise together, but agreed to divide their expenses. The cost of the room was R. The cost of the horseback riding excursion was $125 per person. The historic tour was $214 per couple. Tim and Maria equally split the cost of the room, but Tim also paid for both his and Maria's horseback riding excursion. Maria was to pay for the historic tour but only had to paid half price because the cruise line scratched their luggage, so they offered to pay the other half.