An alien DNA-like molecule is isolated from the frozen remains of a life-form found beneath the Martian polar ice caps. In this sample, for every base designated Q, there is twice that amount of base R; for every base Z, there is twice that amount of base S. If the molecule contains 33.33 percent R, what percentage of Z would you expect?
A) 6
B) 12
C) 24
D) 16.67
E) 54.66

Question

Quizplus · Accepted Answer

The percentage of R is 33.33%, so the percentage of Q is 16.67%. Since there is twice as much Z as S, and there is 16.67% Q, there must be 8.33% S. Therefore, there must be 16.67% Z.

An Alien DNA-Like Molecule Is Isolated from the Frozen Remains