An archer needs to practice.  He intends to shoot 200 shots 4 days a week.  He is able to recover 20% of his arrows.  The arrows he uses cost $5.5 per arrow.  His team agrees to pay for 70% of the cost of his arrows.  How much does he spend for arrows a week?
He shoots 200*4=<<200*4=800>>800 shots per week
He can recover 800*.2=<<800*.2=160>>160 of those arrows
So he uses 800-160=<<800-160=640>>640 arrows a week
The cost for those arrows would come out to 640*5.5=$<<640*5.5=3520>>3520 per week
His team pays for 3520*.7=$<<3520*.7=2464>>2464 of that
So he has to pay 3520-2464=$<<3520-2464=1056>>1056 per week for arrows
#### 1056