Calculate Density of Solid Object Floating in Water

[omgitsmonica]

Homework Statement

A solid object floats with 54% of its volume beneath the surface of the water. What is the object’s density? Give answer in g/cm3.

Homework Equations

Density = mass/ volume

The Attempt at a Solution

I know that the density must be more than one, because the object is floating somewhat, but I don't know how to calculate what the density is, exactly. If anyone has a better formula for this problem, I'd much appreciate it.

 

[noumed]

Hint: what is the density of water? And what does it mean when something is floating on water?

 

[omgitsmonica]

If the density of water is one, and its floating, than it must be less than one?

How do I figure out exactly what it is, though? I don't have the mass or the exact density or the volume, so my formula is useless...