After giving 20% discount on an article a shopkeeper earns 30% profit. Marked price is what percent of cost price?

122.5% 137.5% 150% 162.5%

162.5%

CP                    MP       100 - D%           100 + P%      100 - 20%           100 + 30%          80                      130 Mark price % = 130 × \(\frac{100}{80}\) = 162.5%