the cost price of an article is 30% less than its selling price. find, the profit or the loss as percent.
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Answer:
Profit % = 42 whole 6/7
Step-by-step explanation:
Let the Selling Price be x.
Cost Price = x - (x × 30%)
= x - (x × 30/100)
= x - 30x/100
= (100x - 30x) / 100
= 70x / 100
= 7x / 10
Profit = S.P. - C.P.
= x - 7x/10
= (10x - 7x) / 10
= 3x / 10
Profit % = (Profit / C.P) × 100
= [(3x / 10) / (7x / 10)] × 100
= [(3x / 10) × (10/7x)] × 100
= (30x / 70x) × 100
= (3/7) × 100
= 300/7
= 42 6/7 % OR 42.85 %
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