Answer:
$677.18
Step-by-step explanation:
Data provided in the question:
Bill’s nominal income in 1990 = $1,009 per month
CPI value in the year 1990 = 149
CPI value in the year 2017 = 192
Now,
The Consumer price index ( CPI ) is given as :
CPI = [tex]\frac{\textup{Cost of basket in the current year}}{\textup{Cost of basket in the base year}}\times100[/tex]
thus,
for the given case of year 1990
149 = [tex]\frac{\textup{1,009}}{\textup{Real income in the year 1990}}\times100[/tex]
or
Real income in 1990 = [tex]\frac{\textup{1,009}}{\textup{149}}\times100[/tex]
or
Real income in 1990 = $677.18