Murugan sold a book at a loss of 40%. If the selling price had been increased by Rs.200, there would have been a gain of 10%. What was the cost price of the book?
Let cost price be Rs ‘x’ Then (110% of x) – (60 % of x) = 200 (110x/100) - (60x/10) = 200 110x – 60x = 20000 X = 400 So cost price of the book = Rs.400