21 divided by 4/5
please help

How to solve it and what thw answer is

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5