Answer:
5. x = 8
11. x = 57.6
13. x = 11
15. x = 5
Step-by-step explanation:
In each part, I set up a proportion and cross multiplied to solve.
5. 4/3 = 2x + 4/x + 7
x = 8
11. 25/30 = 48/x
x = 57.6
13. 32/2x + 6 = 60/52.5
x = 11
15. To find missing part: 35 - 20 = 15
20/7x - 11 = 15/4x - 2
x = 5
