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When a discount of 10% is given on goods being sold at a profit of 20% the no of units sold double. The ratio of the previous profit to the present profit is ?

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Roja

Plz answer. Help me

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Sam

Let the cost price CP be 100

Initial selling price = 120(20% profit)

Let 10 units of goods were sold initially Initial profit = 120×10- 100× 10 = 200 Discount of 10% given

New S.P. = 120 - 12 = 108

Now 20 units of goods are sold

New profit = 108×20-100×20 = 160

So ratio of previous profit to present profit = 200: 160 = 5:4

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