Who is the strongest in Daganronpa

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

The population of a city has increased by 35% since it was last measured. if the current population is 86,400 what was the previous population