Multiple choice

A shopkeeper bought 10 water coolers at the rate of Rs. 4200 each. He sold them at a profit equal to the selling price of 3 coolers. Find the selling price of one water cooler.

  1. Rs. 600

  2. Rs. 323.07

  3. Rs. 3230.76

  4. Rs. 6000


Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the selling price of  one water cooler is Rs.x              Selling price of 3 water coolers = Rs 3x                    Profit =  selling price of 3 coolers

                     therefore    profit  = Rs 3x              Cost of one water cooler = Rs. 4200                  Cost of 10 water coolers = 4200 x 10                                                             = Rs. 42000               Selling price = cost price + profit

          Selling price of 10 water coolers = Rs. 10 x          Selling of 10 water coolers = 42000 + 3x                       10 x  = 42000 + 3x                                           10x - 3x = 42000                          7x = 42000

                            x = 42000 / 7                             x = 6000so selling price of one water cooler is Rs. 6000