Answer: 30 feet, 15 feet, 23 feet
Step-by-step explanation:
1st side = 2b
2nd side = b
3rd side = b+8
P (perimeter) = a+b+c
68 = (2b)+b+(b+8)
68 = 4b+8
60 = 4b
b = 15
1st side = 2b = 2(15) = 30
2nd side = 15
3rd side = b+8 = 15+8 = 23
The three sides are 30, 15, and 23.