He loses 3 pounds a week for 4 weeks for a total of 3*4= <<3*4=12>>12 pounds
He loses 2 pounds a week for 8 weeks for a total of 2*8 = <<2*8=16>>16 pounds
All total he has lost 12+16 = <<12+16=28>>28 pounds
Jordan weighed 250 pounds and has lost 28 pounds so he now weighs 250-28 = <<250-28=222>>222 pounds
#### 222