Multiple choice

A man sells a book at profit of 30%. If he had bought it at 10% less and sold it for Rs. 8 less, he would have gained 40%. Find the cost price of the book.

  1. Rs. 250

  2. Rs. 300

  3. Rs. 200

  4. Rs. 350

  5. Rs. 225
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the CP of the book be Rs. x. 

Now, if the profit = 30% 

Then SP = CP(100 + Profit)/100 

= x(100 + 30)/100 

= 130x/100 

If the CP is 10% less and SP is Rs. 8 less,

Then CP = X - X * 10/100 = 90X/100

Now, according to the question,

[90x(100 + 40)]/(100 * 100) = 130x/100 - 8 

After solving this equation,

x = 200 

So, cost price of the book is Rs. 200.

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