Blood contains three types of cells including red blood cells, white blood cells, and platelets. For approximately every 520 red blood cells in healthy humans, there are 40 platelets and 3 white...

Blood contains three types of cells including red blood cells, white blood cells, and platelets. For approximately every

520 red blood cells in healthy humans, there are 40 platelets and 3 white blood cells

Write the ratio of red blood cells to platelet cells.