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Question

A Man sold 2 articles for ₹4,000 each, gained 15% on one and lost 15% on the other. What is the total gain or loss rounded to the nearest integer?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
The correct answer is
₹184 loss

Calculating Article Costs

The problem involves two articles sold at the same Selling Price (SP), ₹4,000 each. One article yields a 15% gain, and the other incurs a 15% loss. We need to find the total gain or loss.

Cost Price of Article 1 (15% Gain)

The formula relating Cost Price (CP), Selling Price (SP), and Profit Percentage is: $SP = CP \times (1 + \text{Profit %})$ Rearranging for CP: $CP_1 = \frac{SP}{(1 + \text{Profit %})} = \frac{4000}{(1 + 15/100)} = \frac{4000}{1.15}$ $CP_1 \approx 3478.26$

Cost Price of Article 2 (15% Loss)

The formula relating Cost Price (CP), Selling Price (SP), and Loss Percentage is: $SP = CP \times (1 - \text{Loss %})$ Rearranging for CP: $CP_2 = \frac{SP}{(1 - \text{Loss %})} = \frac{4000}{(1 - 15/100)} = \frac{4000}{0.85}$ $CP_2 \approx 4705.88$

Total Calculation

Calculate the total Cost Price (CP) and total Selling Price (SP).

  • Total SP = ₹4,000 + ₹4,000 = ₹8,000
  • Total CP = $CP_1 + CP_2 \approx 3478.26 + 4705.88 = 8184.14$

Determining Overall Loss

Compare the Total CP and Total SP to find the net result.

  • Since Total CP (₹8184.14) > Total SP (₹8000), there is a net loss.
  • Total Loss = Total CP - Total SP $\approx 8184.14 - 8000 = 184.14$

Final Rounded Loss

Rounding the total loss to the nearest integer: Total Loss $\approx$ ₹184

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Important Questions from Profit and Loss

  1. Rohit buys 8 pens and 4 pencils for Rs. 2400. He sells pencils at a profit of 20 percent and pens at the loss of 10 percent. If his overall profit is Rs. 240, then what is the sum of the cost price of one pen and one pencil?

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  4. An article when sold at a gain of 5%, yields Rs. 15 more than when sold at a loss of 5%. The cost price will be

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