Yang started driving to the shopping mall at an average speed of 30mph. A short while later he realized he had

Question

left his credit card in the kitchen. He turned around and headed back to the house, driving 20mph (more traffic returning) If it took him a total of 0.6 hours to leave and then return home, how far had Yang driven before he turned around?

Answer 1

This belongs in homework or mathematics, not law and ethics.

30 * x = 20 * (.6 - x)

30 x = 12 - 20x

50 x = 12

x = .24 and .6 - .24 = .36

30 * .24 = 7.2 miles.

20 * .36 = 7.2 miles