Answer:
$83.2
Step-by-step explanation:
If the CPI for 1930 was 16.7, while for 1939 it was 13.9, the change in CPI will be 16.7 - 13.9 = 2.8. The amount lost within the year 19.30 to 1939 if the cost of the item in 1930 is $100 will be expressed as;
= 2.8/16.7 * 100
= 280/16.7
= $16.8
The amount the item would have cost in 1939 will be $100 - $16.8 = $83.2
