Mike decides to develop a plot of land.  He bought 200 acres for $70 per acre.  After development, he sold half of the acreage for $200 per acre.  How much profit did he make?
He bought the land for 200*70=$<<200*70=14000>>14000
He sold 200/2=<<200/2=100>>100 acres
He got 100*200=$<<100*200=20000>>20,000 from selling this
So he made a profit of 20,000-14,000=$<<20000-14000=6000>>6,000
#### 6000