The number of keychains that were made is 10 keychains
Let the number of keychains made be x
From the question, a piece of keychain requires 18 beads.
∴ x keychains will require 18x beads.
Also from the question,
The art club adviser brought a bag with 250 beads for them to use and 70 beads left in the end. That is 250 - 70 beads were used
250 - 70 = 180 beads
Since, 180 beads were used, then, we can write that
[tex]18x = 180[/tex]
This is the equation required to determine the number of keychains
To solve the equation, divide both sides by 18
[tex]\frac{18x}{18} = \frac{180}{18}[/tex]
[tex]x = 10[/tex]
∴ 10 keychains were made
Hence, the number of keychains that were made is 10
Learn more here: https://brainly.com/question/13726510
