Question

. If the selling price of 10 rulers is the same as the cost price of 15
rulers, then find the profit percentage.

Answer 1

Answer:

The gain percentage is 50%. Cost price of 15 rulers = 15 10 = 150 rupees. SP of 1 ruler = 15 rupees. Result: The gain percentage is 50%.

Answer 2

Answer:

Using simple algebra.

If cost price of a ruler is x, the cost price of 15 rulers = 15x

Hence the selling price of 10 rulers = 15x. Selling price of 15 rulers = 15*1.5 x = 22.5 x.

The profit on 15x = 22.5 - 15= 7.5 x

Hence profit % = (7.5x/15x)*100 = 50

It is possible to work this out without algebra also using simple logic, but normally people find Algebra easier to understand.

Step-by-step explanation:

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