Arely is making a necklace of beads. For every 3 silver beads, there is 1 crystal bead and 2 purple beads. If
there are 36 beads in the necklace, how many silver,
crystal, and purple beads are there?

There’s a 3:1:2 ratio. If you add those numbers up you get 6.
Divide 36 by 6 to get 6.
Now multiply the numbers in the ratio by 6 and you should get
18 : 6 : 12

Notice how if you add those up you get 36

So: there are 18 silver beads, 6 crystal and 12 purple

Hope this helps! Any questions let me know :)