24. In a given class room, the numer of girls is ten greater than the y number of boys. If the ratio of the number of girls to the number
boys is 7:5 then find
a. the number of girls ?​

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.

The answer is many solutions.hope this