In each of the following questions is followed by information given in three statements. You have to study the questions along with the statements and decide the information given in which of the statement(s) is necessary and sufficient to answer the question.
How many children are there in the class ?
I. 20% children speak Hindi in the class ?
II. 44 children can speak languages other than Hindi.
III. There are 30 boys in the class.
From I, 20% children speak Hindi only. i.e 80% children can speak other languages.
From II, 44 children can speak language other then Hindi.
If x is the total number of children in the class, then x × 80% = 44 i.e. x = 55. Hence to get the answer
I and II are sufficient.
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