Algebra-1

Question Analysis
This question tests the student's ability to solve a real-world problem involving proportions. The problem involves finding the actual distance between two cities based on a map scale.

Key Concept Explanation
Cross-multiplication is a method used to solve proportions by multiplying the numerator of one fraction by the denominator of the other, setting the products equal. This transforms the proportion into a simple equation, making it easier to solve for an unknown variable.

Step-by-step Solution
1. Set up the proportion: