how much percent above the cost price should a shopkeeper mark his goods so that after allowing a discount of 10 % on the marked price , he earns a profit of 8 % ?
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Answer:
Step-by-step explanation:
The cp price of goods = x
The marked price = x×a%
discount = 10%
profit = 8%
a = ?
Final price = cp+profit = 108% 0f x
Final price=marked price-discount = x×a/100 - 10/100 ×xa/100 = 90% of xa/100
x×108/100 = 90/100 × xa/100
108x/100 = 90xa/10000
108x = 90xa/100
90xa = 10800x
a = 10800x/90x = 120
a% = 120/100 = 120%
The shopkeeper should increase 20%
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