Question 181393
SOLVE USING 2 EQUATIONS AND TWO UNKNOWNS:
Let x=number of bags of rye/blue sold
And y=number of bags of blue grass sold
Now we are told the following:
x+y=19------------------------------eq1
$ understood
245x+347y=5369--------------------eq2
from eq1, x=19-y substitute 19-y for x in eq2:
245(19-y)+347y=5369  get rid of parens:
4655-245y+347y=5369  subtract 4655 from each side
4655-4655-245y+347y=5369-4655  collect like terms
102y=714  divide each side by 102

y=7---------------------number of bags of blue grass sold
substitute y=7 into eq1
x+7=19 subtract 7 from each side
x=12--------------------------number of bags of blue/rye sold
SOLVE USING 1 EQUATION AND 1 UNKNOWN:
Let x=number of bags of blue/rye
Then 19-x=number of bags of blue
So:
245x+347(19-x)=5329
And this will yield the same answer as before

Hope this helps----ptaylor