Can somebody help me solve for x.

Ashopper bought a watermelon a pack of napkins and some paper plates in his state there was no tax on food the tax rate on non-food items is 5% the total for the three items he bought was 825 before tags and he paid $0.19 in taxes how much did the watermelon cost

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

What is another way to express 36 +32