The perimeter of a triangle is 78'. The lengths of the sides are represented by 3 conscutive integers. What are those lengths. I have no idea where to start with this one??????????
Hint: let the length of this triangle be $\displaystyle n,n+1,n+2$ (you may these choose this concecutive number to be $\displaystyle m-1,m,m+1$ as well). The second choice give you a nicer computation.