If the cost price of 18 chairs be equal to selling price of 16 chairs, find the gain or loss percent.

If the cost price of 16 pens is equal to the selling price of 12 pens,then the gain or loss percent is

If the cost price of 6 pens is equal to the selling price of 4 pens,find the profit or loss percent.

If the cost price of 23 toys is equal to selling price of 20 toys, then the gain or loss percentage is

If the cost price of 10 chairs is the same as the selling price of 16 chairs,find the percentage profit or loss in the sale.

If the cost price of 18 mangoes is the same as the selling price of 16 mangoes, find the gain percent.

If the cost price of 18 mangoes is the same as the selling price of 16 mangoes, find the gain percent.