$1.$ Given the following what is the total debt as a percentage of income?

$$

Non$-$mortgage interest and principal $$4,000$

Annual Mortgage interest $ $15,000$

Annual Mortgage Principal payment $ $7,000$

Real estate taxes $$8,000$

Homeowner$$s insurance expense $ $2,000$

Salary $ $70,000.$

The answer says it's $42\mathrm{.}2\%$ But I$\text{'}$m getting $37\mathrm{.}1\%.$ Help me$.$ What am I doing wrong??