Final answer:
Sally deposits approximately $0.22 into her checking account for every $0.20 she deposits into her savings account, as the savings deposits are 90% of the checking deposits.
Step-by-step explanation:
The question asks us to determine how much money Sally deposits into her checking account for every $0.20 she deposits into her savings account, given that her savings deposits are 90% of her checking deposits. To find the amount deposited into the checking account, we can set up a proportion since the saving deposit is defined as a percentage of the checking deposit. Let's denote the amount deposited into the checking account as $x.
Given that Sally deposits $0.20 into her savings for every $x in her checking account, and these savings deposits are 90% of the checking amount, we can write:
0.20 = 0.90 × $x
To find $x, divide both sides of the equation by 0.90:
$x = 0.20 / 0.90
$x = $0.22 (rounded to the nearest cent)
Therefore, Sally deposits approximately $0.22 into her checking account for every $0.20 she deposits into her savings account.