About three fifths of the students at roosevelt elementary school live within one mile of the school what percent of students live within one mile of the school

--  A fraction always means division.
    To change a fraction to its decimal form, DO the division.

     3/5  =  3 ÷ 5  =  0.6

--  To change a decimal to percent,
     move the decimal point 2 places that way  ===> .

                               0.6  =  60%

Iknow one of the answers is a and maybe b but not 100% sure about b