The marked price of a mobile set is Rs 9,600 and 40% discount is allowed to make 20% profit. By what percent is the discount to be reduced to increase the profit by 10%?
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Answer:5%Step-by-step explanation:price after discount :9 600 – 9 600×40%= 5760Original price (price without profit) :let x be the original price of the device.x + x × 20% = 5760Thenx = (5 760×100)÷120= 4 800Original price increased by 30% :4 800 + 4 800×30%= 6 240the discount needed to increase the profit by 10% :[(9 600-6 240)÷9 600]×100= 35%Thento increase the profit by 10% ,we have to reducethe percent of discount to :40% – 35%= 5%