Practice30Create account

Kabir needs exactly 8 notebooks. Compare the two shops' offers. Which shop is cheaper for him, and by how much?

Class 8Comparing QuantitiesComparing Quantities
  • AShop B, by ₹ 24
  • BShop A, by ₹ 88
  • CBoth cost ₹ 360
  • DShop B, by ₹ 120

Step-by-Step Solution

Shop A: buy 6, get 2 free, so he pays . Shop B: each costs , so . Shop B is cheaper by . (‘Buy 3 get 1’ is the same as 25% off, so the lower price wins.)
Answer: A) Shop B, by ₹ 24

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.

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Comparing Quantities practice questions

More Class 8 Comparing Quantities practice

Anita returned the mixer grinder and got the full bill back. The price on the cash memo…Kiran's table for a loan of ₹ 25,000 is filled for Year 1 only. Interest is compounded…A shoe shop in Kochi changed the price tag on these sports shoes. What discount…Compare SI and CI on ₹5000 at 8% for 2 years. What is the difference (CI − SI)?Discount % is always calculated as a percentage of which quantity?