🎙 Teacher-Style Introduction

Discount chapter बिलकुल real-life market based topic है — MRP, Selling Price, Discount %, Successive Discount. Delhi Police Constable exam में यह हमेशा 2 आसान questions देता है — fast calculation required.

📘 Important Formulas

• Discount = Marked Price − Selling Price
• Discount% = (Discount / Marked Price) × 100
• Selling Price = MP × (100 − D)% / 100
• Successive Discount Formula: Final Discount = A + B − (A×B)/100

• छूट = अंकित मूल्य − विक्रय मूल्य
• छूट% = (छूट / अंकित मूल्य) × 100
• विक्रय मूल्य = MP × (100 − छूट%) / 100
• क्रमिक छूट: Final Discount = A + B − (A×B)/100

⚡ Tricks & Shortcuts

• Discount हमेशा Marked Price पर निकाला जाता है.
• Successive discount “Add then subtract product/100”.
• DP exam में mostly 1 discount या 2 successive discount आते हैं.

✔ Solved Examples

Example 1: MP = 500, Discount = 10%. SP = ?
SP = 500 × 90/100 = ₹450.

Example 2: MP = 800, SP = 680. Find discount%.
Discount = 800−680 = 120 → (120/800)×100 = 15%.

Example 3 (Successive): Discounts = 10% and 20%.
Final = 10 + 20 − (200/100) = 28%.

Example 4: MP = 600, discount% = 25%. SP = ?
SP = 600 × 75/100 = ₹450.

Example 5: A shopkeeper gives 12% discount on MP 400. SP = ?
SP = 400×0.88 = ₹352.

Example 6: MP = 1000, discount = 30% then 20%.
Final discount = 30 + 20 − 6 = 44%.

Example 7: Find discount%: MP = 300, SP = 255.
Discount = 45 → % = 45/300×100 = 15%.

Example 8: 2 successive discounts of 15% each.
Final = 15+15−2.25 = 27.75%.

✔ MCQs (Delhi Police Pattern)

1. MP = 500, D% = 10%. SP = ? → 450
2. MP = 900, SP = 720. D% = ? → 20%
3. Discounts: 10% & 10%. Final = ? → 19%
4. MP = 800, D=20%. SP = ? → 640
5. Successive: 20% & 30%. Final = ? → 44%
6. MP = 450, SP = 360. D% = ? → 20%
7. MP 600, discount 12%. SP = ? → 528
8. Successive: 15% & 5%. Final = ? → 19.25%
9. MP = 1000, SP = 850. Discount% = ? → 15%
10. One discount 25%. SP = ? (MP=200) → 150

💡 Motivation: Market me sab bargaining discount hota hai — lekin exam me sirf logic & formula. Aap dono me master ho rahe ho! 🚓🔥