+0  
 
0
28
2
avatar

Fitness training: Carly is training for a triathlon. In her training routine each week, she runs 7 times as far as she swims, and she bikes 3 times as far as she runs. One week she trained a total of 232 miles. How far did she run that week. 

Guest Nov 27, 2018
 #1
avatar+14556 
+2

Given    7  r/s   3  b/r      then   21   b/s

 

232 = r + b + s

232 = 7s + 21 s +s      s  then equals 8 mi       7s = r = 56 mi       (and bike = 3r=168mi)

ElectricPavlov  Nov 27, 2018
edited by ElectricPavlov  Nov 27, 2018
 #2
avatar+92641 
+1

Thanks, EP.....Here's another way just using one variable

 

Let the distance she swims = D

Let the distancvce she runs = 7D

Let the distance she bikes = 3(7D)

 

 

So

 

D + 7D + 3(7D)  = 232    simplify

 

29D  =  232     divide both sides by 29

 

D = 8

 

So....she runs   7D  =  7(8)  =   56 miles

 

 

 

cool cool cool

CPhill  Nov 27, 2018
edited by CPhill  Nov 27, 2018

28 Online Users

avatar
avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.