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Option 4 : 3600
Let the y be the cost at which wholesaler had bought
According to the problem statement
⇒ y × (1 + 5/100) × (1 + 10/100) = 4158
⇒ y × 1.05 × 1.1 = 4158
⇒ y = 4158/(1.1 × 1.05) = 3600
∴ the cost at which wholesaler had bought is Rs. 3600
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