A book seller sold 10 books for rupees 990 and earned a profit of rupee 90.find the cost price per book and profit percent on all the books
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Answer:
Step-by-step explanation:
Cp = Sp - Profit
= 990-90
= Rs. 900
Cp per book = 900/10
= Rs. 90
Profit% = Profit/Cp*100
= 90/900*100
= 10%
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