A customer was offered a discount of 40% on a piece of cloth. On insisting further, the shopkeeper agreed to a further discount of 20% on above. What was the effective discount offered to the customer?

60% 48% 52% 54%

52%

First discount = 40% Second discount = 20% Then, Successive discount =  x + y - \(\frac{x × y}{100}\) Successive discount =  40 + 20 - \(\frac{40 × 20}{100}\) = 52%