Jack saves $10 / 2 = $<<10/2=5.00>>5.00 a week.
Over 8 weeks Jack saves $5.00/week x 8 weeks = $<<5.00*8=40.00>>40.00
In total Jack has $43.00 + $40.00 = $<<43+40=83.00>>83.00 dollars in his piggy bank
#### 83