Answer: $60
Step-by-step explanation:
-----ALEX FOUR WEEKS BUDGET---------
Description - - - - Income - - - - - - Expenses(-)
Earnings :
babysitting&
Errand - - - - - - - - - - 80
College fund - - - - - - - - - - - - - - - - - - 15
Snack - - - - - - - - - - - - - - - - - - - - - - - 20
PC saving - - - - - - - - - - - - - - - - - - - - 15
Entertainment --------------------------------20
IF Alex is sick one weekend and can't earn the $20
Earning per week = total earning /number of weeks
Earning per week = $80/4 = $20
Total earning if ALEX misses one week;
$20 × 3weeks = $60