First, find the volume of the whole cube
Volume of cube = 4 x 4 x 4 = 64 cm³
The volume of sand is 25% of the volume of cube so,
Volume of sand = 25/100 x 64 = 16 cm³
(-3,2)
Explanation: u just have to find the point where the two line intersects to each other
Any rational number will satisfy the situation.