Question

the perimeter of a triangle is 93 feet,the first side is twice as long as the second side,the third side is three feet longer than the first side ,what are the lengths of the sides of the triangles ?

Answer 1

x = 1st side, y = 2nd side, z = 3rd side

P = x + y + z
P = 93
x = 2y
z = x + 3.....z = 2y + 3

93 = 2y + y + 2y + 3
93 = 5y + 3
93 - 3 = 5y
90 = 5y
90/5 = y
18 = y <=== length of 2nd side is 18 ft

x = 2y
x = 2(18)
x = 36 <== length of 1st side is 36 ft

z = x + 3
z = 36 + 3
z = 39 <== length of 3rd side is 39 ft