The johnson twins were born twelve years after their older sister. this year, the product of the three siblings' ages is exactly 618 more than the sum of their ages. how old are the twins?

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?