Answer:
$4050
Explanation:
You want to know how much money Lynn had left after she spent 16% and 30% of her $7500 on food and drink, respectively.
Amount remaining
After spending a total of 16% +30% = 46% of her money, the amount remaining is 100% -46% = 54% of the original amount. That would be ...
0.54 · $7500 = $4050
Lynn had $4050 left.