Answer
Median salary with bachelor’s: ${{\$}} 81,000$
Median salary with doctorate: ${{\$}} 117,000$
Work Step by Step
Salary of an American whose final degree is a bachelor’s is $ x $.
(in thousands of dollars)
45 thousand less than 2$\times $ (x) is $2x-45$
Salary of an American whose final degree is a doctorate is $2x-45$
Total = $ x+(2x-45)=3x-45$
We are given that the total is $198$.
$ 3x-45=198 \qquad $ ... add $45$
$3x=198+45$
$ 3x=243 \qquad $ ... divide with $3$
$ x=81$ thousand
$(2x-45=2(81)-45=117)$
Median salary with bachelor’s: ${{\$}} 81,000$
Median salary with doctorate: ${{\$}} 117,000$
