 Hello and welcome to the session. In this session we discussed the following question which says, finding a single discount which is equivalent to two successive discounts of 20% and 15%. First let's see that the discount is equal to the discount percent of the marked price mp. This is the key idea for this question. Now let's proceed with the solution. First we need to assume let the marked price mp of an article be equal to rupees 100. Now the first discount given is of 20%. So first discount percent is equal to 20%. So from here we get discount on the article is equal to discount percent that is 20% of the marked price which is rupees 100. That is this is equal to 20 upon 100 into rupees 100. This 100-100 gets cancelled and we have rupees 20 is the first discount given on the article. The marked price of the article was taken as rupees 100 and we get the discount on the article as rupees 20. So now we have the price of the article first discount is equal to rupees 100 which was the marked price of the article minus the discount that is rupees 20 and this is equal to rupees 80. So the price of the article after first discount of rupees 20 was given on the article is rupees 80. Now the next discount given is of 15%. So second discount percent on the article is equal to 15%. So the second discount on the article would be equal to 15% of rupees 80 and this is equal to 15 upon 100 into rupees 80. Now this would be equal to rupees 12. So the second discount given on the article is of rupees 12 then the price after the second discount is equal to rupees 80 minus rupees 12 which is equal to rupees 68. That is the net selling price is equal to rupees 68. So the single discount equivalent to given successive discounts is equal to 100 minus 68% which is equal to 32%. Thus our final answer is 32%. So this completes the session. Hope you understood the solution for this question.