Answer:
11 weeks
Step-by-step explanation:
She bought the watch for $149
And paid $50 immediately.
She has $149-$50 left, which gives $99
If she pays $9 each week,
In two weeks, she would be paid $9+$9=$18
In three weeks $9+$9+$9=$27 then it will take her 99/9 weeks to pay off the watch
99/9
It will take her $11 to pay off the watch
