Farmer Brown planted corn and wheat on his 450 acres of land. The cost of planting and harvesting corn is $280.00 per acre. The cost of planting and harvesting wheat is $125.00 per acre. If Farmer Brown's total cost was $102,750, how many acres of corn did he plant?

Answer 1

W = 450 - C

280C + 125W = 102,750

Substitute 450-C for W in the second equation and solve for C.