Of the 600 people at a music festival, 420 had attended the previous year. how many people out of 100 had attended the previous year?

a: 60
b: 42
c: 70
d: 80

i think it is 60

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

the answer is d. 75%