Question

A shopkeeper purchased notebooks at Rs 40 per dozen and sold them at 10 for Rs 36. Find his gain or loss per cent​

Answer 1

Answer:

Gain% On the notebooks =9.9%

Step-by-step explanation:

here,

Cost of 1 dozen notebooks =Rs40

since, 1dozen =12 things

So, CP of 1 notebook=40/12 Rs

=3.3.. Rs per notebook

and

SP of 10 notebooks = Rs 36

so, SP of 1 notebooks =36/10 Rs

=Rs 3.6

Since, SP is > CP

Then, gain on one notebook =SP-CP

=3.6-3.3

= Rs 0.3

Now, gain% =(gain×100)÷CP

= (0.3×100)÷3.3

=(3×100)÷33

=100÷11

=9.9%

so, gain %= 9.9% (9 integer 1/11 %)

Hope it will help you to better understand good luck .