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Profit % question (10% less buy, 10% more sell)?
  1. 10%
  2. 20%
  3. 22.22%
  4. 15%
Explanation

Assume originally:

  • Bought 100 items for Rs.100
    So, Cost Price (CP) per item = Rs.1

Now buys 10% less:

  • 10% less than 100 = 90 items
  • Still spends Rs.100

So new CP per item:

Now sells 10% more:

  • 10% more than 100 = 110 items

Assume selling rate is Rs.1 per item.

So total Selling Price:

Profit:

Profit percentage formula:

Profit/ Cost Price ​×100

Substitute values:

That approach looks tempting, but it ignores that buying fewer changes the cost per item. The correct combined effect is:

=left(frac{20}{90}right)times100=22.22%

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