Question 1048957: The length of a rectangle is 8 cm more than its width. If the length is decreased by 9 and the width is tripled, the area is increased by 50%. What was the area of the original triangle?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39630)   (Show Source):
You can put this solution on YOUR website! What was the area of the original - did you mean to say, RECTANGLE?
 , original area
Changed rectangle,  , the 50% area increase.
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 -------steps might be not the best path, but this equation is still useful.
Re-substitute for A.
 ------substituted for w;
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Maybe the constant term is better factorable.
 -----or maybe this not too useful yet.
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 -----general solution of quadratic formula;
 ---------97 is a prime number.
Approx,  , and 
If taking the PLUS form of L,
Original area, 820
If taking the MINUS form of L,
Original area, 68
Answer by ikleyn(52879)  (Show Source):
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