At ron's roller rink, the number of customers has been decreasing at a steady rate of 5% per year. if there were 900 skaters per week in 2010, what is a good estimate for the number of skaters per week in 2006?

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.