You deposit a cheek for $236.70 into your savings account. Your account has a balance of $319.23 after the deposit. How do you find the balance of your saving account before the deposit?

Question

1771 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-11-08T18:27:36

The balance in the saving account before the deposit was $82.53

Let $a$ $a$ be your balance after the deposit, $b$ $b$ be the balance before the deposit and $d$ $d$ be the amount of the deposit.

Then $a = b + d$ $a = b + d$

We know $a$ $a$ = $319.23 and we know $d$ $d$ = #236.70.

Substituting these into the equation gives:

$319.23 = $b$ $b$ + $236.70

Solving for $b$ $b$ while keeping the equation balanced gives:

$319.23 - 236.70 = $b$ $b$ + $236.70 - $236.70

$82.53 = $b$ $b$ + 0

$b$ $b$ = $82.53