SOLUTION: Mary has 9 dogs having 3 different colors: Browns are more than Blacks, Blacks are more than Greys, and there are twice as many Browns as Greys. What is the formula to determine ho

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Mary has 9 dogs having 3 different colors: Browns are more than Blacks, Blacks are more than Greys, and there are twice as many Browns as Greys. What is the formula to determine ho      Log On


   

Question 924888: Mary has 9 dogs having 3 different colors: Browns are more than Blacks, Blacks are more than Greys, and there are twice as many Browns as Greys. What is the formula to determine how many are of each color?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x the number of grays. 2x Brown and y Black
2x > y and y > x
.......
x + 2x + y = 9 Trying x = 2 and considering 2x > y and y > x
2 + 4 + 3 = 9
2 Grays, 4 Browns and 3 Black