Anirudh travels 55 km at 11 km/h, 65 km at 13 km/h, and 120 km at 20 km/h. What is his average speed (in km/h)?
15
Average speed = total distance ÷ total time.
Times taken: 55 ÷ 11 = 5 h, 65 ÷ 13 = 5 h and 120 ÷ 20 = 6 h.
Total distance = 55 + 65 + 120 = 240 km and total time = 5 + 5 + 6 = 16 h.
Average speed = 240 ÷ 16 = 15 km/h.
Hence, the answer is 15.
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