Question

the cost price of the 11 pens is equal to the selling price of the 10 pens find the loss or gain percent

Answer 1

Heya...
Here is your answer ----


CP of 11 pens = SP of 10 pens

Let the CP of 1 pen be ₹ 1

=> CP of 11 pens = ₹ 11

=> SP of 10 pens = ₹ 11

=> SP of 1 pen = ₹ 11/10


------>>> SP > CP <<<------

Gain = SP - CP
Gain = 11/10 - 1
Gain = 1/10

Gain% = Gain/CP × 100

Gain% = [(1/10)/1] × 100

Gain% = 1/10 × 100

Gain% = 10%

HOPE IT HELPS....!!!!

Answer 2

Given that cost price of 11 pens = selling price of 10 pens.

Let the cost price of each pen be Rs.1

Then the cost price of 10 pens = Rs.10.

Then the selling price of 10 pens = cost price of 11 pens

                                                        = Rs.11.


Therefore the selling price of 10 pens = Rs.11.


We know that Gain = Selling price - Cost price

                                 = 11 - 10

                                 = 1.


We know that Gain% = $(\frac{Gain}{Cost price} * 100)$%

                                    = $\frac{1}{10} * 100$%

                                    = 10%.


Therefore the gain = 10%.


Hope this helps!