Home › GMAT › quantitativereasoning › Rates And Work › A train travels 240 km at 80 km/h, then 180 km a…
A train travels 240 km at 80 km/h, then 180 km at 60 km/h. The average speed for the entire journey is:
A66 km/h
B68 km/h
C70 km/h
D72 km/h
E75 km/h
Answer & Solution
Correct answer: C. 70 km/h
1. Identify what is being asked: this is a **Rates And Work** question.
2. Apply the standard approach for this question type to evaluate each option.
3. The correct answer is **C. 70 km/h** — it satisfies the conditions of the stem.
_Source: GMAC Official 12 Sample Questions (mba.com)_