initially the first bank account is $5 less than the second account. after a month the first account had tripled and the second account had doubled. at that time they were equal. what was the amount originally in each account?

let second account initial amount be x,

first account initial amount = x - 5

after a month,

first account = 3 (x - 5)

= 3x - 15

second account = 2x

3x - 15 = 2x

x = 15

original in first account = 15 - 5

= $10

original in second account = $15