The equivalent mass of a metal is double that of oxygen.How many times is the mass of its ixide greater than the mass of the metal?

Hey Student..
As per what is required in this question, you need to take into account the basic concept of the n factor and the equivalent weight.
since the ques is playing with equivalent masses so you need to try working in the terms of n factor
n factor is nothing nut the change in the oxidation number of the element in both the compounds forms