+0  
 
0
211
1
avatar+644 

hi plz help

Image and video hosting by TinyPic

waffles  Dec 7, 2017
 #1
avatar+89953 
+2

 

Call the amounts invested x and y

 

.06x +.05y  =  234.50   ⇒  6x + 5y  = 23450  ⇒  30x + 25y  = 117250    (1)

.05y +.06y  =   239.60 ⇒   5x + 6y  = 23960  ⇒ -30x - 36y  = -143760    (2)

 

Add (1)  and (2)

 

-11y = -26510       divide both sides by -11

 

$2410  =  y 

And using   1

 

30x = 25(2410)  = 117250

30x + 60250  = 117250

30x  = 57000  divide both sides by 30

x  = $1900 

 

 

cool  cool cool

CPhill  Dec 7, 2017

10 Online Users

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.