Among the proper fractions with 18 ad the denominator, which of them are larger than 1/2 but smaller than 5/6?
A proper fraction has numerator less than denominator.
Mark numerator less as x.
You can write this question as:
1 / 2 < x / 18 < 5 / 6
Multiply both sides by 18
1 / 2 ∙ 18 < x < 5 ∙ 18 / 6
9 < x < 15
Your proper fractions are:
10 / 18
11 / 18
12 / 18
13 / 18
14 / 18