+0  
 
0
112
2
avatar+182 

A zoologist tagged 4 tortises in a consevation area. The average weight of the 4 tortisis was 87 pounds. The zoologist added 2 more tortises. The average weight of all 6 tortises was 90 pounds what was the average weight of the last 2 tortises

 

 

 

I think i spelled tortise wrong lol its fine

Animallover36  May 17, 2017
Sort: 

1+0 Answers

 #2
avatar+25982 
+1

90 = (4*87 + 2*w)/6. where w is the average weight of the last two tortoises.

 

Rearrange:

 

w = (6*90 - 4*87)/2 

 

w = 96 pounds

.

Alan  May 17, 2017

6 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details