You split $1500 between two savings accounts. account a pays annual 5% interest and account b pays 4% annual interest. after one year, you have earned a total of $69.50 in interest. how much money did you invest in each account?

You have 1 500 dollars and divided it into 2
=> Account A = X
=> pays annual 5% interests
=> Account B = Y
=> pays 4 % annual interests
After 1 year you earned 69.50 dollars in interest.
How much money did you invest?
Let’s start solving
=> 5% (1500 – account B) + 4%B = 69.50
=> 75 - 0.05B + 0.4B = 69.5
=> 5.5 = 0.1B
=> B = 550

Now, let’s solve for A
=> 1500 – 550
=> 950

Um what? rephrase that ?