Question

Pure ghee costs Rs. 100 per kg. After adulterating it with vegetable oil
costing Rs. 50 per kg, a shopkeeper sells the mixture at the rate of Rs. 96 per kg, thereby
making a profit of 20%. In what ratio does he mix the two ?​

Answer 1

Answer: 2:3

Step-by-step explanation: The S.P. of the mixture = Rs. 96 per kg

Profit = 20%

∴ The C.P. of the mixture is

=  

=  

=  

=  

Now, we have the C.P. per kg of pure ghee, vegetable oil and the mixture of both, so by using the mixture and alligation method, we get

Pure Ghee                          Vegetable Oil

 100                                          50

                    Mixture

                        80

  30                                            20

    3                                              2                                        

           

∴  

Thus, the shopkeeper should mix pure ghee and vegetable oil in the ratio of 3:2.

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