20. While playing a real-time strategy game, Ricardo created military unitsfor batte: long swordsmen, spearmen, and crossbowmen. Long
swordsmen require 30 units of food and 15 units of gold. Spearmen require
40 units of food and 35 units of wood. Crossbowmen require 35 units of
wood and 25 units of gold. Ricardo used 925 units of gold, 2275 units of
wood, and 2200 units of food to create the units, how many of each type of
military unit did he creata?
Show your equation that you used and use matrices to solve the problem.
Show all work.