Instructions

Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data rovided in the statements are sufficient to answer the question. Read both the statements and-

Give answer a: if the data in statement I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question
Give answer b: if the data in statement II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question
Give answer c: if the data either in statement I alone or in statement II alone is sufficient to answer the question.
Give answer d: if the data in both the statements I and II together are not sufficient to answer the question.
Give answer e: if the data in both the statements I and II together are necessary to answer the question.

Question 143

How many children are there in the class ?
I. Boys and girls are in the ratio of 8 : 5 respectively and number of girls is less than that of boys by 24.
II. Number of girls in the class is 40

Solution

I : Let the number of boys and girls be $$8x$$ and $$5x$$ resp

    => $$8x - 5x = 24$$

    => $$x = \frac{24}{3} = 8$$

    Hence, total number of children in the class = $$13x$$ = 13 * 8 = 104

Statement I alone is sufficient


Statement II does not give any relation between the number of boys and girls. Thus, it is not sufficient.


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