Answer:
30; 75
Step-by-step explanation:
If Kayla used 12 beads to make 4 bracelets, the ratio of beads to bracelet is 3 to 1.
We'll multiply ratio by 10 to get that Kayla needs 30 beads to make 10 bracelets.
We'll multiply the ratio by 25 to get that Kayla needs 75 beads to make 25 bracelets.