Mitch planted cabbage, squash and carrots on his 150 acre-farm. He planted half the farm with squash and 22% with carrots. How many acres did he plant with cabbagge?

150 total acres ...

he planted half the farm with squash ... 150/2 = 75 acres squash

he planted 22% with carrots ... 0.22 (150) = 33 acres carrots

150 - (75 + 33) = 150 - 108 = 42 acres cabbage <==