Answer:
5
Step-by-step explanation:
1 crystal can raise 12 zombies
x crystals can raise 60 zombies
This is a problem involving ratio-and-proportion.\
1/x = 12/60
Reduce the fraction to lowest terms 1/x = ⅕
Multiply each side by x 1 = x/5
Multiply each side by 5 x = 5
Lilliana needs five dark power crystals to raise 60 zombies.