SOLUTION: 1/4 of the puppies were black 3/6 of the puppies were brown. The rest were spotted. What fraction of the puppies was spotted? ???????????

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: 1/4 of the puppies were black 3/6 of the puppies were brown. The rest were spotted. What fraction of the puppies was spotted? ???????????      Log On


   

Question 167054: 1/4 of the puppies were black 3/6 of the puppies were brown. The rest were spotted. What fraction of the puppies was spotted? ???????????
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
Let's illustrate each number of puppies:
Let x= number of puppies
where---system%28%281%2F4%29x=black%2C%283%2F6%29x=%281%2F2%29x=brown%29
Then,
x-%28%281%2F4%29x%2B%281%2F2%29x%29
x-%28%281x%2B2x%29%2F4%29
x-%283x%2F4%29
%284x-3x%29%2F4
highlight%28%281%2F4%29%28x%29%29 ---> total spotted is 1%2F4 of the total number of puppies x
So if there are total 12 puppies:
12 puppies (just a sample)---system%281%2F4=3=spotted%2C1%2F2=6=brown%2C1%2F4=3=black%29
*note: %281%2Fcross%284%29%29%28cross%2812%293%29=3; %281%2F2%29%2812%29=6; %281%2Fcross%284%29%29%28cross%2812%293%29=3
Thank you,
Jojo