3761. 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. 22 kg
- B. 29 kg
- C. 20 kg
- D. None of these
Check answer and explanation
Answer: 20 kg
Explanation 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