Answer:
5.4 numbers of purple beads and 12.6 numbers of silver beads.
Step-by-step explanation:
Arlene makes a necklace using 14 purple beads for every 6 silver beads. So, she uses purple and silver beads in the ratio 14 : 6 = 7 : 3.
Now, the necklace contains 18 beads, then in the ratio 7 : 3, there will be [tex](18 \times \frac{3}{3 + 7}) = 5.4[/tex] numbers of purple beads and (18 - 5.4) = 12.6 numbers of silver beads. (Answer)