The answer to the question "how many times does a typical person in the united states brush his or her teeth each day? " is measured in the:

The amount of times that a typical person in the united states brush his or her teeth each day is measured in the :
C. Ones
Brushing your teeth too often will destroy the composition of your teeth

The average time people brush there teeth is about three times a day. any more will destroy your enamel and will cause sensitivity.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.