A vegetable garden is 12 meters long by 7 meters wide. It is home to 168 mice. What is the population density of the mice?

Population density=number of mice / number of square meters.

1) we calculate the number of square meters.

area of a rectangle=length x width

area of a vegetagle garden=12 m * 7 m=84 m²

2) we calculate the population density

Population density=168 mice / 84 m²=2 mice/m²

Answer: the population desity of the mice is 2 mice/m²