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Question

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

Harry paid a total of Rs. 800 for a set of different mock tests. How many of the mock tests cost Rs. 40?

I. Each Mock Test costs either 25 or 40

II. More than 4 Mock Tests cost Rs. 40

A If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient in answer the question. Correct Answer Incorrect Answer
B If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question. Correct Answer Incorrect Answer
C If the data in either in statement I alone or in statement II alone are sufficient to answer the question. Correct Answer Incorrect Answer
D If the data in both the statements I and II together are not sufficient to answer the question. Correct Answer Incorrect Answer
E If the data in both the statements I and II are together necessary to answer the question. Correct Answer Incorrect Answer

Solution

From I, we get Let number of mock tests for Rs. 25 be x And number of mock tests for Rs. 40 be y Then, 25x + 40 y = 800 5x + 8y = 160 X = 32 - 8y/5 Since x is the number of mock tests for Rs. 25, it has to be a positive integer Thus, y can take the values 0, 5, 10, 15, 20 According to statement II, more than 4 mock Tests cost Rs. 40. Values of y more than 4 are: 5,10,15 and 20. Thus, we cannot find out the exact number of mock tests costing Rs. 40.

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