The school field trip for December is to the local Holiday Festival where there are horse drawn carriage and sleigh rides. Every student gets to take the horse drawn carriage or the sleigh ride. In the first hour 4 horse drawn carriage rides and 5 sleigh rides took a total of 132 students. In the second hour 6 horse drawn carriage rides and 4 sleigh rides took a total of 156 students. If the same number of students rode on each horse drawn carriage ride and the same number of students rode on each sleigh ride, how many students rode on each horse drawn carriage ride? How many students rode on each sleigh ride?