A Wooden Raft Has a Mass of 55 Kg $\text { (density } 1000 \mathrm {~kg} / \mathrm { m } ^ { 3 } \text { ) }$

Short Answer

A wooden raft has a mass of 55 kg. When empty it floats in water $\text { (density } 1000 \mathrm {~kg} / \mathrm { m } ^ { 3 } \text { ) }$ with 64% of its volume submerged. What maximum mass of sand can be put on the raft without sinking it?