We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
-1
42
2
avatar+15 

Odell and Kershaw run for 30 minutes on a circular track. Odell runs clockwise at 250 m/min and uses the inner lane with a radius of 50 meters. Kershaw runs counterclockwise at 300 m/min and uses the outer lane with a radius of 60 meters, starting on the same radial line as Odell. How many times after the start do they pass each other?

 

 

PLZ HELP

 

 

I NEED YOU CPHILL OR ELECTRICPAVLOV OR ANYBODY ELSE!!!!!!!

 Oct 31, 2019
edited by HIHIBIGBRAIn  Oct 31, 2019
edited by HIHIBIGBRAIn  Oct 31, 2019
 #1
avatar+19838 
+1

How may laps does Odell run?    250m/min * 30 min / (pi *d) = 250*30 / (pi *100) = 23.87 laps

                               Kershaw runs  300m/min *30 min /(pi *d) = 300*30/(pi*120)   = 23.87 laps     in the same time

   The pass each other TWICE each lap    and only ONCE for the .87 lap   = 47 times (?)       Not positive....cheeky

 Oct 31, 2019

19 Online Users

avatar