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प्रश्न
If the cost of a dozen soaps is Rs. 153.60, what will be the cost of 15 such soaps?
बेरीज
उत्तर
We know that 1 dozen = 12
Since, cost of 12 soaps = Rs. 153.60
Therefore, cost of 1 soap = `153.60/12` = Rs. 12.80
Therefore, cost of 15 soaps = Rs. 12.80 × 15 = Rs. 192.
Thus, cost of 15 soaps is Rs. 192.
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