# Math Help - Tricky question..

1. ## Tricky question..

Evening Forum I have a interesting word problem..

What's the difference between saying "The thicker a beam is, the stronger it is." and saying "The strength of a beam varies directly as its thickness."?

2. Originally Posted by AlgebraicallyChallenged
Evening Forum I have a interesting word problem..

What's the difference between saying "The thicker a beam is, the stronger it is." and saying "The strength of a beam varies directly as its thickness."?

However, the 2nd statement is a statement of direct proportionality. If strength = S, and thickness = T, then the 2nd statement says $S = kT$ where k is some constant! This means that if you change S, then T change proportionally!