If 2 pencils cost 8 rupees, how many can you buy with 40 rupees?
Correct answer: B. 10
- A. 8
- B. 10
- C. 12
- D. 16
Explanation
To solve the problem, first determine the cost per pencil. Since 2 pencils cost 8 rupees, each pencil costs 8/2 = 4 rupees. With 40 rupees, you divide by the cost per pencil: 40/4 = 10 pencils. Therefore, you can buy 10 pencils with 40 rupees. Option B is correct. Option A suggests you can buy only 8 pencils, which would cost only 32 rupees. Option C implies buying 12 pencils, requiring 48 rupees. Option D suggests 16 pencils, needing 64 rupees. All these exceed or fall short of the available amount of 40 rupees.
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Logical problems present several conditions about people, objects, events or choices and require their possible arrangements to be tested. They cover constraint-based reasoning, rankings, matching, grouping, scheduling and elimination, with attention to the difference between a complete solution and a possibility that merely satisfies one condition.
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