Question

What is the average speed of a person traveling equal distances at speeds of 40 km/h, 30 km/h, and 15 km/h?

• A. 16
• B. 32
• C. 48
• D. 24

Answer 1

Answer:

D. 24

Average Speed= 3abc/ ab+bc+ac a=40 b = 30 c = 15 =(3 × 40 × 30 × 15) / (40 ×30 + 30 × 15 + 40 × 15) = 54000/2250 = 24