GMAT Sentence Correction (SC) | Re: In most major metropolitan areas, the number of hate crimes per capita

However this rule applies for quantity words such as fractions / percentages, but not for actual numbers. For example:
One of the five pizzas IS eaten.... correct
Two of the five pizzas ARE eaten.... correct
Number of Pizzas eaten = one/two - one/two are numbers, not fractions / percentages - hence the rule of associated noun does not apply here.
DearAjiteshArun , hope you would agree with my view.