121. A dealer offers a cash discount of 20% and still makes a profit of 20%. If he further sells 8 articles at a rate of 6 articles, then how much percentage above the cost price does he mark on each article?
122. A single discount equivalent to three successive discount of 6%, 15% and 14% is:
123. A dealer gains 20% by selling an article at 25% discount on its marked price. If the cost price of the article is decreased by 15%, how much discount percentage should he now given on the same marked price so as to earn the same percentage of profit as before?
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