Hey you!
If I understood your question correctly, here's your answer:
0.93/3 = 0.31
0.31 × 4 = 1.24
So, it would cost $1.24 for 4 packs.
I Really Hope You Found This Helpful!
Sorry, I'm no help because I have no idea how to do those!
See photo for drawing.
Words:
Suppose a square is 100%,
50%: the square is divided into two equal parts, and one of them is shaded, therefore it is 50%.
25%: the square is divided into 4 equal parts, and one of them is shaded, therefore it is 25%.
150%: there are two squares, each divided into 2 equal parts, and 3 of them is shadowed, therefore it is 150%.