Answer:
It will take Chris 13 weeks of allowance to save enough to buy the computer.
Step-by-step explanation:
Chris needs $858 to buy a computer.
She has already saved $575.
She gets $15 an hour for babysitting and will babysit 12 hours in the next month, then she will get for babysitting:
($15/hour)(12 hours)=$180
Then, Chris will need:
A=$858-$575-$180→A=$103
She can save &8 a week form her allowance, then she will need:
Number of weeks: n = $103 / ($8/week) → n=12.875 weeks
Rounding:
n=13 weeks
