A shopkeeper gives 20% discount on MRP. Joginder buys a suitcase from the shop, at an additional discount of 20% on the reduced price. If the MRP of the suitcase is ₹1,200, then find the purchasing price paid by Joginder.

Correct option is C

Given:

MRP of the suitcase = ₹1200

First discount = 20%

Second discount = 20% on the reduced price

Formula Used:

New Price = P $$\times \left(1 - \frac{d}{100} \right)$$​

Solution:

Apply the first 20% discount

Reduced Price = 1200 $$\times \left(1 - \frac{20}{100} \right)$$​

= 1200 $$\times$$​ 0.8 = 960

Apply the second 20% discount on ₹960

Final Price = 960 $$\times \left(1 - \frac{20}{100} \right)$$​

= 960 × 0.8 = 768

​$$\boxed{₹768}$$ 

Alternate Method: 

$$= A + B +\frac{A\times B}{100} \\ \ \\ =-20-20 +\frac{-20\times -20}{100}\\ \ \\= -40 + 4\\ =-36$$

​$$=1200\times \left(1 - \frac{36}{100} \right) \\ \ \\=1200\times\left(\frac{64}{100}\right)\\ \ \\=12 \times64$$ 

= 768

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