3 folders cost $\$ 2.91$.
Which equation would help determine the cost of 2 folders?

Choose 1 answer:
(A) $\frac{2}{\$ 2.91}=\frac{x}{3}$
(B) $\frac{2}{x}=\frac{3}{\$ 2.91}$
(C) $\frac{x}{2}=\frac{3}{\$ 2.91}$
(D) $\frac{2}{x}=\frac{\$ 2.91}{3}$
(E) None of the above

Question

3 folders cost $\$ 2.91$.
Which equation would help determine the cost of 2 folders?

Choose 1 answer:
(A) $\frac{2}{\$ 2.91}=\frac{x}{3}$
(B) $\frac{2}{x}=\frac{3}{\$ 2.91}$
(C) $\frac{x}{2}=\frac{3}{\$ 2.91}$
(D) $\frac{2}{x}=\frac{\$ 2.91}{3}$
(E) None of the above

Accepted Answer

∻Solution by Steps∻ ‖ step 1 ⋮ To find the cost of 2 folders based on the cost of 3 folders, we need to set up a proportion where the cost of 2 folders is to the cost of 3 folders as 2 folders is to 3 folders. ‖ ‖ step 2 ⋮ The correct proportion is $\frac{x}{2} = \frac{\$ 2.91}{3}$ because $x$ represents the cost of 2 folders and $\$ 2.91$ is the cost of 3 folders. ‖ ‖ step 3 ⋮ Solving the proportion for $x$ will give us the cost of 2 folders. ‖ ***C*** ∻Key Concept∻ ⚹Proportion⚹ ∻Explanation∻ ⚹To determine the cost of 2 folders based on the cost of 3 folders, we use a proportion that relates the number of folders to their cost.⚹◊What is the correct equation to determine the cost of 2 folders based on the cost of 3 folders being $2.91?⍭ Generate me a similar question◊$

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