Question

Neeraj bought a radio at 20% discount and sold it for Rs. 468, which is 4% more than the markedprice.What is the cost price of the radio?(1) Rs. 380 (2) Rs. 360 (3) Rs. 410 (4) Rs. 420 (5) None of these

Answer 1

1) Rs. 360  IS THE ANSWER ..........

 Marked price = MP
Neeraja bought it for  20% discount on the MP.  
  cost price of radio for Neeraja = (100 - 20)% of MP = 0.80 MP
    This is the selling price too at the shop.
  
  Neeraja sold it for Rs 468  =  MP + 4% MP = 1.04 MP

        MP = Rs 468 / 1.04 = Rs 450
 
  Cost price at which Neeraja bought it = 0.80 * Rs 450 = Rs 360 .....