Four of 12 people choose milk what fractional part of the group chose other drinks

We know that 4 people chose milk. Which means we can conclude that the other people chose other drinks. Thus we can say that 8 people chose other drinks.

Fraction = Chosen Drinks/Total people = 8/12 = 2/3

$22. if larry's profit were to minimize by one for every hour his store were to be closed, we would subtract 30 by 8.