Answer:
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
