Answer:
B. 10
Step-by-step explanation:
Let x represent pounds of chocolate worth $1.50 a pound and y represent pounds of chocolate worth 90¢ ($0.90) a pound.
We have been given that a mixture contains 30 pounds of both chocolates. We can represent this information in an equation as:
We are also told that a mixture of 30 pounds of candy sells for $1.10 a pound. We can represent this information in an equation as:
From equation (1), we will get:
Upon substituting this value in equation (2), we will get:
Therefore, 10 pounds of the $1.50 chocolate were used to make the mixture and option B is the correct choice.