The cost price of 12pen is equal to the selling price of 18 pen find gain or loss percent
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let CP of 12 pens = ₹12
so CP of 18 pens = ₹18
but in ques SP of 18 pens = ₹12
so loss= 18-12= 6
loss % =
so CP of 18 pens = ₹18
but in ques SP of 18 pens = ₹12
so loss= 18-12= 6
loss % =
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