A motorcycle and a delivery truck left a roadside diner at the same time. After travelling in the same direction for one and one-quarter hours, the motorcycle had travelled 25 km farther than the delivery truck. If the average speed of the motorcycle was 60 km/h, find the average speed of the delivery truck.      Please remember: First and Last Name Class Problem of the Week # Answer done on a sheet of looseleaf (folded in fourths in order to fit into the ballot box) Show how you found your answer (answer only will not be eligible for draw) Put your answer in a summative phrase (sentence form) with a circle around it (makes it clearer for the judges) Make sure your work is neat (the winner's solution will be posted on the website)