If a person walks at 15 km/hr instead of 9 km/hr, he would have walked 20 km more. The time traveled by him is? Choose one:
A) 8 hours  B) 9/5 hours  C) 10/3 hours  D) 6 hours  E) 11/3 hours
Let the actual distance traveled be x km. Then,   x/9 = (x + 20)/15   5x - 3x = 60 =&gt;x = 30 km.   travel time is = 30/9 hours = 10/3 hours   Answer :10/3 hours
<result>C</result>
If a person walks at 15 km/hr instead of 9 km/hr, he would have walked 20 km more. The time traveled by him is?