John weighs twice as much as Susan. Susan's weight is 60% of Sam's weight. Mark weighs 50% of Lynn's weight. Lynn weighs 150% of John's weight. Which of these 5 people weighs the least?	Choose the correct choice from the following answers:
A) John	B) Susan	C) Sam	D) Mark	E) Lynn
John weighs twice as much as Susan --&gt; J=2S --&gt; John cannot weigh the least;   Susan's weight is 60% of Sam's weight --&gt; S=0.6*Sam --&gt; Sam cannot weigh the least;   Mark weighs 50% of Lynn's weight --&gt; M=0.5*L --&gt; Lynn cannot weigh the least;   Lynn weighs 150% of John's weight --&gt; L=1.9*J --&gt; John cannot weigh the least (we already know that);   As you can see the answer is either Susan (S) or Mark (M). To compare their weights we should express their weights in regards of the same person: M=0.5*L=0.5*(1.5*J)=0.75*J and from J=2S, S=0.5*J --&gt; Susan weights the least: Susan's weight is 50% of that of John and Mark's weight ismore than 50%of that of John.   Answer: Susan.
<result>B</result>
John weighs twice as much as Susan. Susan's weight is 60% of Sam's weight. Mark weighs 50% of Lynn's weight. Lynn weighs 150% of John's weight. Which of these 5 people weighs the least?