Question

The selling price of 7 pens is equal to the cost price of 8 pens. Find the gain percentage.​

Answer 1

Answer:

33.33%

Step-by-step explanation:

let cost of 1 pen be equals to x.

Then, cost of 8 pens will be equals to 8x.

Now, selling price of 6 pens = 8x as in question it is given that cost price of 8 pens = Selling price of 6 pens.

So, selling price of 1 pen = 8x6=4x3

Now, profit percentage =S.P - C.P of 1 pen × 100 , S.P – C.P because it is given that there is profit and condition of profit is S.P>C.P

Substituting values, we get

profit percentage =4x3 - xx × 100

=4x−3x3x × 100

= 33.33 %