Which of the following statements is definitely true?
A) P is of the same mass as S while R is of the same mass as T.
B) The total mass of Q and R is the same as that of S and T.
C) If R is heavier than T, then Q has to be heavier than S.
D) If Q is heavier than S, then R has to be heavier than T.
Correct Answer: A
Solution :
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