The correct answer is:
$280 per month.
Step-by-step explanation:
Increasing the tuition by 5% means taking 100% of the original number plus an additional 5%; 100+5 = 105% of the original amount.
105% = 105/100 = 1.05; to find 105% of 3200 we multiply it by 1.05:
3200(1.05) = 3360
Since she saved the same amount monthly, we divide the expected total by 12 to find this amount:
3360/12 = 280