Question 148367
I gave you two methods here. The second is quicker than the first.


First method:

inch=2.54 centimeters
inch=25 words


x=average words in centimeter
y=5.3 (average letters per word)


{{{25=2.54x}}}
Divide each side by 2.54
{{{9.84=x}}}

xy=average letters per square centimeter
{{{(9.84)(5.3)}}}=average letters per square centimeter


52.2 average letters per square centimeter



Second method:
inch=2.54 centimeters
inch=25 words
5.3 letters per word


(5.3)(25)=letters per inch
132.5


Divide by 2.54 to get average letters in centimeter
132.5/2.54=52.2


52.2 average letters per square centimeter