Use a proportion to solve the problem.
If 4 sandwich rolls cost $1.08, how much will 18 rolls cost?
A) $4.32 B) $6.32 C) $5.86 D) $4.86
To solve this problem, we can set up a proportion.
We know that 4 sandwich rolls cost $1.08. Let's call the cost of 18 rolls "x."
The proportion can be set up as:
4 rolls / $1.08 = 18 rolls / x
To solve for x, we can cross-multiply and then divide:
4 * x = 1.08 * 18
4x = 19.44
Now, divide both sides of the equation by 4 to solve for x:
x = 19.44 / 4
x ≈ 4.86
Therefore, 18 rolls will cost approximately $4.86.
The correct answer is D) $4.86.
1.08/4 = x/18
Solve for x.