The VAT is calculated for 1 painting and is added with the cost. Then the result is multiplied by 8 to get the total amount

Let the marked price be 100.

Discount = Marked Price - Selling Price

The value of sales tax is found and added to the price of the table.

the denominator is 120, it is because A’s salary is taken the reference point here

the denominator is 120, it is because A’s salary is taken the reference point here

Discount = Marked price - Selling price

PERCENTAGE INCREASE= (actual increase/original quantity)*100

PERCENTAGE DECREASE= (actual decrease/original quantity)*100

Discount = Marked Price - Selling Price