Answer:
Number of pencil packages, n = 5
Explanations:
The total amount spent on art pencils and erasers = $47
The amount of money spent on eraser = $7
The price of 1 package of pencils = $8
Let the number of packages of pencils bought = n
Total amount spent = Amount of eraser + (number of pencil packages x Price of pencil packages)
47 = 7 + (n x 8)
47 = 7 + 8n
47 - 7 = 8n
40 = 8n
40 / 8 = n
5 = n
n = 5