Question

pls answer my question friends ....100 points !! question no.10 .....giddy up guys

Answer 1

Let the cost price of each pen = 1.

Given that Selling price of 5 pens is equal to cost price of 7 pens.

Then the cost price of 5 pens = Rs. 5

Selling price of 5 pens = Rs. 7

Now,

Gain = Selling price - cost price

= > 7 - 5

= > 2.

We know that Gain% = (gain)/CP * 100

= > (2/5) * 100

= > 200/5

= > 40%.

Hope this helps!

Answer 2

Comment below if any doubt occurs.