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A Guwahati furniture store marks a study table at ₹7500, offers 20% off, and then takes a further 10% off the reduced price. How much does the customer save altogether?

Class 8Comparing QuantitiesComparing Quantities
  • A₹2250
  • B₹2100
  • C₹1500
  • D₹5400

Step-by-Step Solution

After 20%: . After a further 10%: . Saving = 7500 − 5400 = 2100. Trap: adding the rates to 30% gives ₹2250, but the second discount is taken on ₹6000, not on ₹7500. ₹1500 is the first discount only and ₹5400 is the price paid.
Answer: B) ₹2100

Key idea: Discount

A discount is a reduction off the **marked price** (MP), not the cost price. The selling price (SP) is what the customer actually pays.

**SP = MP − Discount**
**Discount % = (Discount / MP) × 100**

Example: shirt MP ₹800, discount 25%. Discount amount = 25% of 800 = 200. SP = 800 − 200 = 600.

Note: discount % is calculated on MP. Profit/loss % (Class 7) is on CP. Don't mix them up.

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