Question

When you owe money, you have a negative balance. You owe $200 to your bank. You pay $30 back. What is your new bank balance?

Answer 1

So in this problem we need to do some addition. 

take the starting balance (-200) and add it to the amount you paid back (30) 

-200 + 30 = -170

Answer 2

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

Amount he owed to his bank = $200

So, Now , Bank balance would be = (-) $200

Again,

Amount he paid back = $30

So, it will denoted with (+) sign as it is deposited into the bank.

So, Bank balance would be

$-200+30\\\\=(-)\ 170$

Hence, First option is correct.