Answer:
a) $30, 000
Step-by-step explanation:
The Consumer price index is the weighted average of the cost of basket of good of goods and services consumed by a typical consumer in an economy. It is used to measure the rate of inflation rate.
The salary in Wrexington in Charlieville dollars=
(CPI in Charlieville / CPI in Wrexington)× Wrexington Salary
= (90/150)× $50,000
=$30, 000