SOLUTION: The students are doing a fundraiser to help out a friend. They are selling chocolate and cookies for $3 and $2.50 respectively. The cookies were presold to 60 people. At least h

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The students are doing a fundraiser to help out a friend. They are selling chocolate and cookies for $3 and $2.50 respectively. The cookies were presold to 60 people. At least h      Log On


   

Question 1157291: The students are doing a fundraiser to help out a friend. They are selling chocolate and cookies for $3 and $2.50 respectively. The cookies were presold to 60 people. At least how many of the chocolates must be sold to collect $255?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

let the number of chocolate sold be x and cookies y
if they are selling chocolate for $3 and cookies for $2.50, they will earn
$3x%2B2.50y
to collect $255, they need to sell
3x%2B2.50y=255
if the cookies were pre-sold to 60 people, means y=60
3x%2B2.50%2A60=255
3x%2B150=255
3x=255-150
3x=105
x=35
At least 35 of the chocolates must be sold