Step-by-step explanation:
We are given the following information;
A grocer wants to mix two types of candy, which we shall call x and y.
He wants to mix a total of 19 pounds which means, he would have the following;
He also intends to sell the total mix for $1.55 per pound. At that rate, his total sales would be;
Note that one kind of candy sells for $1.30 per pound, that is;
The other kind sells for $2.40 per pound, that is;
The total mix would now sell for;
We can now solve the system of equations and determine the values of x and y as follows;
From equation (1), make x the subject of the equation and we'll have;
Substitute for the value of x into equation (2)
We can now combine like terms;
Divide both sides by 1.10;
We can now substitute for the value of y into equation (1);
Therefore, he should use the following mix;
ANSWER:
For the $1.30 candy = 13.74 pounds
For the $2.40 candy = 5.26 pounds