Solve proportion equations and explain why the setup matches the context.
Pick the proportion that matches the context
Problem
A car travels \(180~\text{miles}\) in \(3~\text{hours}\) at a constant rate. Which of the candidate proportions A and B correctly finds distance \(d\) in \(5~\text{hours}\)? Choose it, then solve for \(d\).
Big Picture
What this problem is really about
Each fraction must keep an actual distance paired with its travel time and use miles over hours on both sides. We’ll test the candidate setups against those pairings, then find the known miles-per-hour rate and scale it to five hours. Cross multiplication offers a second check on the distance and its units.
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