Multiple choice

Karan bought a certain number of note-books for Rs. 1200. He sold $\displaystyle \frac {1}{4}$ of them at 5 percent loss. At what price should he sell the remaining note-books so as to gain 10% on the whole ?

  1. Rs $1,131$
  2. Rs $1,181$
  3. Rs $1,035$
  4. Rs $1,190$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total CP = 1200. Target gain = 10%, so target SP = 1200 * 1.1 = 1320. 1/4 of notebooks (CP = 300) sold at 5% loss = 300 * 0.95 = 285. Remaining CP = 900. Required SP for remaining = 1320 - 285 = 1035.

AI explanation

Using the total selling price method, the overall target selling price to gain 10% on Rs. 1200 is Rs. 1320, and the selling price of the first quarter at a 5% loss is Rs. 285. The remaining three-quarters must therefore sell for 1320 - 285 = Rs. 1035. The required selling price for the remaining note-books is Rs. 1,035.

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