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प्रश्न
If the cost of 12 pens is Rs 138, then the cost of 14 such pens is
विकल्प
Rs 164
Rs 161
Rs 118.30
Rs 123.50
उत्तर
Rs 161
Cost of 12 pens = Rs 138
Cost of 1 pen = Rs `138/12`
Cost of 14 pens = Rs `138/12` × 14 = Rs `1932/12` = Rs 161
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