Question

The perimeter of a scalene triangle is 90 feet. The first side is three times the third minus six. The second side is twice the third plus three. How long is the third side?

Answer 1

15.5

Explanation:

3rd side =x

3x-6 +2x-3+x =90

6x-3 =90

6x =93

x= 15.5

3(15.5)-6=40.5

2(15.5)+3=34

40.5+34+15.5 =90