If 20% of p is 10, what is 10% of p?

If 10% of m is the same as 20% of n, then m : n is equal to :

If 10% of x is equal to 20% of y, then find x:y.

P is 10% less than Q. Q is 10% more than R. R is 20% less than S. If S is 1000, then what is the value of P?

An article is sold at two successive discounts of 10% and 20%. If the selling price is Rs.1080, then what is the marked price?

A person bought an article and sold it at a loss of 20%. If he had bought it for 10% less and sold it for 55% more, then he would have made a profit of 50%. The C.P. of the article is