Walking with 3/5 of my usual speed, I miss the bus by 5 minutes. What is my usual time?	Choose one.
A) 16 min
B) 26 min
C) 34 min
D) 20 min
E) 15 min
Speed Ratio = 1:3/5 = 5:3Time Ratio   = 3:5 1 -------- 5 3 --------- ? è 15   Answer: 15 min
<result>E</result>
Walking with 3/5 of my usual speed, I miss the bus by 5 minutes. What is my usual time?