In 1950, the average price of a car was about $2000. This may sound inexpensive, but the average income in 1950 was much less than it is now. To compare dollar amounts over time, use the formula =, where A is the old dollar amount, S is the starting year’s Consumer Price Index (CPI), C is the converting year’s CPI, and V is the current value.

Show how you would rearrange the formula to find the old dollar amount.

A. = A= vc/s

B. = A= s/vC

C. = A= c/sV

D. = A =vs/c

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