HELP me with this question, please

Question

Deon's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Deon $5.25 per pound, and type B coffee costs $4.20 per pound. This month, Deon made 138 pounds of the blend, for a total cost of $632.10. How many pounds of type A coffee did he use?

Answer 1

Let x = the number of pounds of type A coffee made

Let y = the number of pounds of type B coffee made

x+y=138

$5.25x + $4.20y = $632.10

Now solve these two equations for x and y