Question 85592

Let x=number of lbs cashews
Then 3-x=number of lbs of peanuts
We know that $6.00x=cost of the cashews
We also know that $1.50(3-x)=cost of peanuts

Now we are told that her total cost was $9.00, so our equation to solve is:

$6.00x+$1.50(3-x)=$9.00  get rid of parens

$6.00x+$4.50-$1.50x=$9.00  subtract $4.50 from both sides

$6.00x+$4.40-$4.50-$1.50x=$9.00-$4.50  collect like terms

$4.50x=$4.50  divide both sides by $4.50

x=1 lb---------------------------------number of lbs of cashews

3-x=3-1=2 lbs-----------------------number of lbs of peanuts

CK

$6.00(1)+$1.50(2)=$9.00
$6.00+$3.00=$9.00
$9.00=$9.00


Hope this helps---ptaylor