The ratio is 4:9 to get from 4 to 36, you need to multiply 4 by 9. Now you need to do the same to 9. multiply 9x9 to get 81. The new ratio is 36:81, with 3 point tries being 81.
Hope this helped :)
Answer = $55
Because 3 + 7 + 5 = 15
The 3 = black coffee
The 7 = sugar coffee
And the 5 = milk coffee
So then u do 5/15 simplified = 1/3
So then do 1 /3 of $165 = $55
Step 2 subtract
Step 4 multiple
3 because u have to do 3 times 4 than add that one witch give you 13 over 4 so u have to divide 4 and 13 witch gives u 3