Answer:
90%
Explanation:
In order to find the percentage of the money Juana spent while shopping, you must take the amount of money spent and divide it by the total amount of money.
$45 dollars spent divided by $50 dollars total will give you your fraction, in decimals:
45 / 50 = 0.90
Multiply by 100% to find your percentage
0.90 * 100% = 90.0%