Kenny ordered guitar strings for Glenn’s Guitar Shop. The premium guitar strings are $4.50 apiece. The standard guitar strings are $1.50 apiece. The bill smeared in the rain, but Kenny knows he ordered a total of 80 strings for $225.
Let x = the number of premium strings.
Let y = the number of standard strings.
x + y = 80,
4.50x + 1.50y = 225
How many of each type of string did Kenny order?
He ordered
premium strings.
He ordered
standard strings.