Mike has to get an x-ray and an MRI.  The x-ray is $250 and the MRI is triple that cost.  Insurance covers 80%.  How much did he pay?
The MRI cost 250*3=$<<250*3=750>>750
So between the two things he pays 250+750=$<<250+750=1000>>1000
Insurance covered 1000*.8=$<<1000*.8=800>>800
So he had to pay 1000-800=$<<1000-800=200>>200
#### 200