Hello!
The garbage patchs are a site with high concentrations of trash. They are formed by the ocean gyre, where the ocean have convergences zones forming a circle of currents. When the garbage join the circle, it can't go out, cause the currents make a kind of a permanent "wall".
We can locate garbages patchs in the South Atlantic Gyre, Indian Ocean Gyre and the South Pacific Gyre.
Hugs!
the relationship between mass and volume I known as density
6x+4y=13
-(3x+4y=8.5)
-------------------
3x=4.5 =x=4.5/3=1.5
It will be 1.5