A college has a total of 107 teachers
23 more female teachers than male teachers.
What proportion of the teachers are female?
In any working, please use n as the unknown.
Give your final answer as a fraction.

Total-107
Male teacher-n
Female teacher-n+23
N+n+23=107
2n+23=107
2n= 84
N=42

Male teacher-42
Female teacher-42+23=65
65/107 teacher are female

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.