Question 585133
A triangle with a perimeter of 100 feet has side lengths in the extended ratio of 4:7:9 Find the side lengths of the triangle. 
--------------
4+7+9 = 20
100/20 = 5
--------
4*5 = 20
7*5 = 35
9*5 = 45
-------
Sides are 20, 35 & 45 feet