Walking with 4/5 of my usual speed, I miss the bus by 6 minutes. What is my usual time?  Answers
A) 16 min B) 26 min C) 34 min D) 24 min E) 12 min
Speed Ratio = 1:4/5 = 5:4Time Ratio   = 4:5 1 -------- 6 4 --------- ? è 24   Answer: 24 min
<result>D</result>
Walking with 4/5 of my usual speed, I miss the bus by 6 minutes. What is my usual time?