A train covers 120 km at a constant speed of 30 km/h. How long does the journey take?
Answer and explanation
Correct answer: C. 4 hours
- Step 1: Time equals distance divided by speed: hours. Answer: 4 hours. Why not the others: 3600 hours: multiplies instead of dividing. 0.25 hours: inverts the fraction. 5 hours: adds an extra hour.
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