Let the product on which the successive discounts are offered be of Rs.1000/- Case(a)Successive discounts offered are 20%, 15%, 10% 20% of 1000 = (20/100) × 1000 = 200The price of product after discount of 20% is = 1000 − 200 = 800 15% of 800 = (15/100) × 800 = 120The price of product after successive discount of 15% is = 800 − 120 = 680 10% of 680 = (10/100) × 680 = 68The price of product after...