A person bought some article at the rate of 5 per rupee
and the same number at the rate of 4 per rupee. He
mixed both the types and sold at the rate of 9 for Rs.
2. In this business he suffered a loss of Rs. 3. Find th
total no. of articles bought by him?
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Let the person bought x articles of both the types.
Amount spent on first type of article = x/5
Amount spent on second type of article = x/4
Total CP = x/5 + x/4
= 9x/20
Total SP = Rs. 2x × 2/9 = 4x/9
9x/20 − 4x/9 =3
81x - 80x = 3 × 180x = 540
Final answer: 540
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