Answer: He planted 670 acres of corn.
Step-by-step explanation:
Let x be the number of acres of corn and y be the number of acres wheat Farmer planted.
According to the given information, we have the following system of equations:
Divide equation (2) by 135 , we get
Subtract eqn (1) from (3), we get
Put value of x in (1), we get
Hence, he planted 670 acres of corn.