Can you explain what numbers you use to find the answer so that I know how to do it in the future?

Thanks,

Question 4

Here are some line items from a balance sheet (statement of financial position). What amount of Additional Paid-In Capital does the company have?

Total liabilities and stockholders' equity	$1,000
Current liabilities	.
Common stock	$100
Contributed capital	$400
Noncurrent assets	$700
Retained earnings	$100
Total assets	.
Noncurrent liabilities	$300
Additional paid-in capital	.
Current assets	.
Total liabilities	$350
Total stockholders' equity