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Railways PYQCBT 2 2017

RRB NTPC · Question 30

Two varieties of rice, A and B, costing Rs. 210 and Rs. 280 per kg respectively are mixed in the ratio of 3 ∶ 4. The mixed variety is sold at Rs. 260 per kg. What is the profit percentage?

  1. 6%

  2. 5%

  3. 32%

  4. 4%

Show answer & explanation

Answer: (D) 4%

Explanation

Cost of 7 kg of the mixture = 3 × 210 + 4 × 280 = 630 + 1120 = Rs 1750, i.e. Rs 250 per kg. Selling at Rs 260 gives a profit of 10/250 × 100 = 4%.