The table gives information about the heights, in cm, of some children. Height (in cm)
Frequency
140 7
150 17
160 20
170 6
Estimate the mean height, in cm, of the children.

Megan and desmond each add the same amount of water to their aquarium megan makes 5 ml of chemical solution with every gallon of water for her aquarium desmond mixed 8 ml of chemical solution for every 2 gallon of the water for his aquarium.