John can produce 1000 tires a day.  It cost $250 to produce each tire.  He manages to sell them for 1.5 times as much.  He could sell 1200 tires a day if his factory was able to produce more.  How much money does he lose out a week by not being able to produce all the tires?
He sells each tire for 250*1.5=$<<250*1.5=375>>375
That means he makes a profit of 375-250=$<<375-250=125>>125 per tire
His production is 1200-1000=<<1200-1000=200>>200 short
So he loses out on 125*200=$<<125*200=25000>>25,000 a day
So he loses out on 25000*7=$<<25000*7=175000>>175,000 a week
#### 175000