Question

A boy buys 9 apples for rs9.60 and sell them at 11 for Rs12 Find his gain

Answer 1

Given CP of 9 apples = 9.60
     
                      1 apple = 9.60/9

                                   = 16/15.

Given SP of 11 apples = 12

                      1 apple = 12/11.


Gain = SP - CP

          = 12/11 - 16/15

          = 4/165.


Gain %  = 4/165/16/15 * 100

              = 25/11

              = 2.272.


Hope this helps!

Answer 2

9.60÷9=1.06666667,12÷11=1.09090909,1.09090909-1.0666666=0.02424249 is the gain