If 12% of the cost price of a good is same as 10% of its selling price and 15% of the cost price is ₹10 more than the 12% of the selling price then what is its selling price.

₹2,000

12% of the cost price of a good is same as 10% of its selling price

 12% CP = 10% SP    

12 CP = 10 SP     ----(1)

15% of the cost price is ₹10 more than the 12% of the selling price

15%CP = 12%SP + 10      

15CP = 12SP + 1000       ----(2)

multiply equation 1 by 6 and equation 2 by 5 , and then subtract

72CP - 75CP = - 5000

3CP = 50

put in equation 1 ,

4 × 5000 = 10 SP

10SP = 20000

SP = 2000

The correct answer is Option (3) → ₹2,000