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Railways PYQCBT 1 2016

RRB NTPC · Question 88

Naveen purchased a gas cylinder and a stove for Rs. 4500. He sold the gas cylinder at a gain of 25% and the stove at a loss of 20%, still gaining 4% on the whole. Find the cost of the gas cylinder.

  1. Rs. 3600

  2. Rs. 2400

  3. Rs. 3000

  4. Rs. 2600

Show answer & explanation

Answer: (B) Rs. 2400

Explanation

Let the cylinder cost x, so the stove costs 4500 − x. Overall SP = 1.25x + 0.8(4500 − x) = 1.04 × 4500 = 4,680. So 0.45x + 3600 = 4680, giving 0.45x = 1080 and x = Rs 2,400.