Answer
The percent increase in average yearly earnings is 100%
Work Step by Step
Students majoring in social work earn $\$38,000$ per year.
Students majoring in engineering earn $\$76,000$ per year.
We can find the increase in average yearly earnings.
$\$76,000 -\$38,000 = \$38,000$
We can express this increase in average yearly earnings as a decimal of the average yearly earnings for students majoring in social work.
$\frac{\$38,000}{\$38,000} = 1.0$
To express a decimal as a percent, we can move the decimal point two places to the right.
$1.0 = 100\%$
The percent increase in average yearly earnings is 100%.