First, determine the cost per kilogram of flour by dividing $8.25 by 5.5 kg.
C = ($8.25) / 5.5 kg
C = $1.5/kg
If we are then to determine the price of 2/3 price if $1 would be enough.
C2 = (2/3 kg)($1.5/kg) = $1
The answer would be YES. $1 will be enough in order to purchase 2/3 kilograms of flour.
