Answer:
2.5
Step-by-step explanation:
5x+3x=20
8x=20
x=20/8=2.5
The answer is actually 80 degrees, I just took the test.
158 boys, and 163 girls, do this by dividing 321 by two(do get how many of each gender if #s were equal) subtract 2.5 to get boys, and add 5 to that to get girls