While going to eat at one of the greatest BBQ restaurants in the state of Texas called Franklin's BBQ, Robert buys 5 turkeys, 2 hams and 3 racks of ribs. He ends up spending $145. Jordan buys 1 turkey, 6 hams and 2 racks of ribs. He ends up spending $160. Erick buys 3 turkeys, 1 ham and 10 racks of ribs. He ends up spending $200.

Using a matrix - what is the cost of 1 ham? Round to nearest whole number