Question

Ava bought some markers for $2 each and some pencils for $1 each. She bought 3 more markers than pencils and spent a total of $12. How many pencils did ava buy?.

Answer 1

6

Explanation:

→ Set up 2 simultaneous equations

2x + y = 12

3 + x = y

→ Substitute 2nd equation into 1st

2x + 3 + x = 12

→ Simplify and solve

3x = 9 ⇔ x = 3

→ Substitute back

x = 3, y= 6