Dejon wants 180 l of fruit punch that is 6% juice at the store, he finds only punch that is 3% juice of punch that is 8% juice. how much of each should he purchase

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?