Section: Mathematics

30) 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 190% of John's weight. Which of these 5 people weighs the least?

1. John
2. Susan
3. Sam
4. Mark
5. Lynn

John weighs twice as much as Susan, so John cannot weigh the least. Susan's weight is less than Sam's, so Sam's weight is not the least. Mark's weight is 1/2 of Lynn's weight so Lynn can't weigh the least. The only possible answers are Susan or Mark. Let J, S, Sa, M, L stand for the weights. M = .5L = .5(1.9)J. So M = .95J. Since J = 2S, we know S = .5J, therefore Susan weighs the least.