By what per cent must the cost price be raised in fixing the sale price in order that there may be a profit of 20% after allowing a commission of 10%?
By what per cent must the cost price be raised in fixing the sale price in order that there may be a profit of 20% after allowing a commission of 10%?
[A]
[B]
[C]
[D]
Let the CP = 100 Rs.
Then, SP = 120 Rs.
Let the marked price = x Rs.
Then, 90% of x = 120 Rs.
Hence, the marked price is 
