Answer:
I might be wrong but I did the calculations and my answer is that she put $30 aside each week and the airfare to hawaii is $660
Step-by-step explanation:
This is how I find my answer
first:
14 weeks - 9 weeks = 5 weeks
$390 - $240 = $150
$150/5 = $30 ( that is what she save per week)
then I did
$30 x 140 = 420 + 240 = $660