A worker bee has a mass of 1 x 10^-4 kg. There are 4 x 10^4 worker bees living in one hive. What is the mass of all the worker bees in the hive together?

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?