Ali went to a shop to buy 50 kg of rice. He buys two varieties of rice which cost him Rs. 4.5 per kg and Rs.5 per kg. He appends a total of Rs. 240. What was the quality of cheaper rice bought by him?

A) 20 kg

B) 25 kg

C) 30 kg

D) None of these

Let A be the amount of type of first rice and
B be the Amount of second type of rice

According to question:  A + B = 50 Kg
Also
                           A  x 4.5 + B x 5 = 240 Rs
Thus solving the above two equations
                    (50 – B) x 4.5 + 5B = 240
                       225 – 4.5 B + 5B = 240
                                          0.5 B = 15
                                                 B = 15/ 0.5
                                                 B = 30 Kg
                                        Thus A = 50 – 30 = 20 Kg

 

Related MCQs:
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  2. A trader mixes 26 kg of rice at Rs. 20 per kg with 30 kg of rice of other variety at Rs. 36 per kg and sells the mixture at Rs. 30 per kg. His profit percent is?
  3. A bag of 20 kg of rice is consumed by 10 persons in 15 days. If 5 persons are added then the same rice shall be banished in?
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