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    Question

    15.8% of 9000 + 20.4% of 7500 = 30% of ?

    What value should come in place of the question-mark(?) in the following questions:
    A 9840 Correct Answer Incorrect Answer
    B 7550 Correct Answer Incorrect Answer
    C 6840 Correct Answer Incorrect Answer
    D 6440 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    15.8% of 9000 – 20.5% of 7500 = 30% of ? `158/1000`  9000 -  `204/1000`   `xx`  7500 = 30% of ? 1422 + 1530 = `30/100`   `xx`     ? 2952 = =  `30/100`   `xx`     ? ? = 9840

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