Ramesh sold a book at a loss of 30%. If he had sold it for Rs. 140 more, he would have made a profit of 40%. The cost price of the book is
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2
Let the cost of book = Rs. 100
Now,

So, when he sold for 70 more, CP = 100
Now, when he sold for 140 more , CP = 200