Question

2. Bhuvan bought notebooks from the wholesale
market and sold 10 notebooks for the amount
he paid for 12 notebooks. Find his gain or loss
per cent.​

Answer 1

Let us assume that he had paid Rs.x for 12 notebook

Then the cost of each notebook is Rs.x/12

then the cost of 10 notebooks is Rs.10x/12

In the question given, He sold 10 notebooks at the rate of 12 notebooks that means he will gain profit

So, the cost he sold 10 notebooks totally is Rs.x -(1)

and the cost he bought 10 notebooks is Rs.10x/12 -(2)

So, we subtract (2) from (1)

i.e (x)-(10x/12)=x/6

So, the profit percent is (x/6)*100