SOLUTION: kumble takes 2 hours to travel from bangalore to mysore. how long will srinath take to travel half the distance at an average speed that is one and half times that of kumble ?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: kumble takes 2 hours to travel from bangalore to mysore. how long will srinath take to travel half the distance at an average speed that is one and half times that of kumble ?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 917842: kumble takes 2 hours to travel from bangalore to mysore. how long will srinath take to travel half the distance at an average speed that is one and half times that of kumble ?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +s+ = Kumble's speed
Let +d+ = distance he travels
----------------------------
(1) +d+=+s%2A2+
(1) +s+=+d%2F2+
-----------------
Srinath's equation:
(2) +d%2F2+=+%283%2F2+%29%2As%2At+
(2) +d+=+3%2As%2At+
By substitution:
(2) +d+=+3%2A%28d%2F2%29%2At+
(2) +1+=+%283%2F2%29%2At+
(2) +t+=+2%2F3+
+%282%2F3%29%2A60+=+40+
--------------
Srinth's time is 2/3 hr, or 40 min