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If the cost of 5 bars of a soap is Rs. 3...

If the cost of 5 bars of a soap is Rs. 30, then the cost of one dozen bars is: (a) Rs. 60     (b)  Rs. 120    (c) Rs. 72        (d)  Rs. 140

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RD SHARMA-RATIO, PROPORTION AND UNITARY METHOD-All Questions
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