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Question
If the cost of 12 pens is Rs 138, then the cost of 14 such pens is
Options
Rs 164
Rs 161
Rs 118.30
Rs 123.50
Solution
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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