A boy goes from his house to school at 3 km/h and return at 2 km/h. If he takes total 5 h in the whole journey, find the distance between school and his house.
- A. 10 km
- B. 7 km
- C. 4 km
- D. 6 km ✓
Correct Answer: D. 6 km
Explanation
Let distance be d. \frac{d}{3} + \frac{d}{2} = 5 \Rightarrow \frac{5d}{6} = 5 \Rightarrow d = 6 km.
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