a = 3 b
c = 5 b
a + b + c = 72
3 b + b + 5 b = 72
9 b = 72
b = 8
so
a = 24 and c = 40
The first side is triple the second side and the third side is five times the second side. What are the sides of the triangle if the perimeter is 72ft?
1 answer
1 answer