the cost of price of 16 notebook is equal to do of 12 notebook. Find the gain per cent.
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Here is your answer --
CP of 16 notebooks = SP of 12 notebooks
=> Let the CP of 1 notebook be ₹1
=> CP of 16 notebooks = ₹1×16 = ₹16
=> SP of 12 notebooks = ₹16
=> SP of 1 notebook = ₹16/12 = ₹4/3
SP>CP
Gain = SP - CP
Gain = ₹ (4/3 - 1)
Gain = ₹1/3
Gain % = Gain/CP ×100
Gain % = 1/3 ×100
Gain % = 33 1/3%
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