# The following question consists of three statements I, II and III are given below. You have to decide whether the data provided in the statements are sufficient to answer the question. What is the average of weight of girls in the class? I. Average weight of all the 60 students is 42 kg. II. Average weight of boys is 43 kg. III. Total weight of all girls together is 1144 kg. (a) I and II only              (b) II and III only                (c) All I, II and III                (d) All two of the three

## Question ID - 51471 :- The following question consists of three statements I, II and III are given below. You have to decide whether the data provided in the statements are sufficient to answer the question. What is the average of weight of girls in the class? I. Average weight of all the 60 students is 42 kg. II. Average weight of boys is 43 kg. III. Total weight of all girls together is 1144 kg. (a) I and II only              (b) II and III only                (c) All I, II and III                (d) All two of the three

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I. gives, sum of weights of 60 students =  kg

II. gives, if there be  boys in the class, sum of weights of  boys

= 43 kg  …

III. gives, sum of weights of all girls = 1144 kg   …

From  we have

So, the number of boys = 32, number of girls =

Thus, I, II, III are needed to find the answer.

Next Question :

The following question consists of three statements I, II and III are given below. You have to decide whether the data provided in the statements are sufficient to answer the question.

What is the average age of 45 students studying while in a class?

I. The average age of boys is 15.4 years while the average age of girls is 14.6 years.

II. Boys and girls are respectively in the ratio is 4 : 5.

III. The number of boys is less than that of girls by 5.

(a) I and II only           (b) I and III only         (c) All I, II and III          (d) I and either II and III