Question Number: #Com4321

The average weight of a class of 100 students is 45 kg. The class consists of two sections, I and II, each with 50 students. The average weight, W1, of Section I is smaller than the average weight W2, of the Section II. If the heaviest student say Deepak, of section II is moved to Section I, and the lightest student, say Poonam, of Section I is moved to Section II, then the average weights of the two sections are switched, i.e., the average weight of Section I becomes  W2 and that of Section II becomes W1. What is the weight of Poonam?
A: W2 – W1 = 1.0 .
B: Moving Deepak from Section II to I (without any move I to II) makes the average weights of the two sections equal.

Above question is followed by two statements A and B. Indicate your response based on the following directives.

A.) Questions can be answered using A alone but not using B alone.
B.) Question can be answered using B alone but not using A alone.
C.) Question can be answered using A and B together, but not using either A or B alone.
D.) Question cannot be answered even using A and B together.

Answer is option : C

Question Related Topics:
Quantitative Ability

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