Question

If CX = 5 units, then DZ = __units.

Answer 1

Let's DZ = x

25/5 = 20/x
25x = 100
x = 4
answer
DZ = 4

Answer 2

need to do a ratio

25/20 = 5/x

20*5 = 100

x=100/25 = 4

DZ = 4 units