Step-by-step explanation:
Let’s set up a proportion.
6/20=x\100 (percent is always out of 100. set parts and wholes equal)
x=30
30 percent of the people are from out of state.
Cubic, since it has three dimensions instead of only two.
180=76+4x
180-76=4x
104=4x
104/4=x
26=x
Measurement A= 26