1.

1). a loss of 10%2). a gain of 10%3). a loss of 20%4). a gain of 20%

Answer»

Cost of 1 article = 5400/90 = Rs. 60

Total cost PRICE of 70 articles = 70 × 60 = Rs. 4200

PROFIT earned = 5040 – 4200 = Rs. 840

% profit = (840/4200) × 100 = 20%

HENCE, there is a gain of 20%.



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