C. realize. MI72/3 Topic 4 Test (LMS graded)
Aaron starts walking at a rate of 3 mi/h on a road toward a store 10 mi away. Zhang leaves the store when Aaron starts walking, and he walks toward Aaron along the same road at 2 mi/h.
How many hours will pass before they meet?
A. 1.5 h
B. 10 h
C. 2 h
D. 3 h

Question

UpStudy AI · Accepted Answer

To determine how many hours will pass before Aaron and Zhang meet, let's analyze their movements:

1. **Initial Distance**:  
   - Aaron is 10 miles away from the store.
   - Zhang starts at the store.
   - **Distance between them initially**: 10 miles.

2. **Speeds**:
   - **Aaron's speed**: 3 miles per hour (toward the store).
   - **Zhang's speed**: 2 miles per hour (toward Aaron).

3. **Relative Speed**:
   - Since they are moving towards each other, their speeds add up.
   - **Combined speed**: 3 mi/h + 2 mi/h = 5 mi/h.

4. **Time to Meet**:
   - Time = Distance ÷ Speed.
   - **Time = 10 miles ÷ 5 mi/h = 2 hours**.

**Answer:**  
C. 2 h
They will meet after 2 hours.

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