By selling an article an article for Rs. 600 a man loses 20 %. At what price he will sell in order to gain 25 %.
On selling an article for Rs. 48, a shopkeeper loses 20 %. In order to gain 20 %, what would be the selling price ?
(a) Rs. 52
(b) Rs. 56
(c) Rs. 68
(d) Rs. 72