Question

the cost price of 16 notebook is equal to the selling price of 2 and 12 notebooks find the gain percent

Answer 1

answer:
     Let the Cost Price of one notebook be Rs 1.
  therefore , cost Price of 16 notebooks = Rs 16
             And Selling Price of 12 notebooks = Rs 16
                 or selling Price of one notebook = 16/12
                 therefore , Selling Price of 16 notebooks = 16/12*16
 Gain = selling Price of 16 Notebooks - Cost Price of 16 Notebooks
         =16*16/12 - 16
         =16*16 - 16*12 /12
         =16 (16 - 12)/12
         =16*4/12
         =16/3
hence gain % = Gain / Cost Price of 16 Notebooks *100
                     = (16/3)/16*100
                     =16/3*1/16*100
                    = 100/3
                    Gain %=33.33%

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