Why are the solutions to the proportions 50/x=10/20 and 10/50=20/x the same?

a. because both result in the equation 20x=500, which simplifies to x = 25

b. because both result in the equation 20x=500, which simplifies to X= 250

c. because both result in the equation 10x= 1,000, which simplifies to x= 10

d. because both result in the equation 10x= 1,000, which simplifies to X=100

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.