A tub of water is filled with an Initial (starting) volume of 100 L. A toy is placed in the tub and the water level rises to 115 L. The toy has a mass of 15 kilograms. What is the density of the toy in Kg/L?

I was told it was 1, can someone please explain why that is?

1 kg/l

Explanation:

Density is defined as mass per unit volume of an object and expressed as d=m/v

Where m is the mass, v is the volume and d is the density.

Given the mass of toy as 15 kg, the volume is given by getting the differences between the final and initial reading of tge tub, since tgis is the volume that the object displaces.

The volume will be 115-100=15 liters.

Now, substituting 15 kg for m and 15 l for v, the density will be

D=15/15=1 kg/l

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.