Question 841232
he length of a rectangle is three times it's width.
L = 3W
 A new rectangle is created by decreasing the length of the original rectangle by half.
 By what factor must the original width be multiplied, if the area remains unchanged? 
Let the factor to accomplish this = x
.5L * xW = L * W
Divide both sides by L
.5xW = W
x = 2 is the factor to accomplish this (double the width)
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See if that works, assume L=30; W=10 originally, A = 300
New rectangle L=15; W=20; A = 300