A shopkeeper allows a discount of 10 on the marked priced of an item but charges a sales tax of 8 on...........

Quant (SSC) Profit and loss

A shopkeeper allows a discount of 10% on the marked priced of an item but charges a sales tax of 8% on the discounted price. If the customer pays Rs 3,402 as the price including the sales tax, then the marked price is

3400

3500

3600

3800

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Explanation:

Let the original MP = 100/-
SP after discount of 10% = 90/-
And SP after salex tax = 90 + 8% of 90
⇒ 90 + 7.2 = 97.2/-
With the rule of ratio & proportion
If 97.2 (SP) → 100 (MP)
∴ 3402 → ? (let's take X)
On cross multiplying the terms
x = 3402 × 100 /100 = 3500