Answer: $2480
Explanation:
First, find a common denominator of the fractions
15/40 and 16/40
then add them to find the total spending each month
12/40 + 16/40
=31/40
= 0.775
then do 0.775 (her spending) multiplied by 3200(salary)
0.775 x 3200
=$2480
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