A shopkeeper makes a net profit of 44% on selling an article at successive discounts of 10% and 20%. Find the net profit percentage, if the shopkeeper sells the same article at a discount of 15%.

70%

Successive discount = X + y - \(\frac{x × y}{100}\)

If MP was 100

Successive discounts of 10% and 20% = 20 + 10 - \(\frac{20 × 10}{100}\) = 28%

ATQ, 

CP × 144% = (100 - 28) = 72

CP × 100% = 50

If SP is 100 - 15 = 85

then the profit is = 85- 50 = 35

Profit%=  \(\frac{35 × 100}{50}\) =70%