CPI increases from 29.6 to 38.8. if eggs cost $0.31 in 1960, how much would they cost in 1970?
38.8 / 29.6 =1.3108 - 1 x 100 =31.08% increase in inflation over 10 years
$0.31 x 1.3108 =$0.41 cost of eggs in 1970.
+36916 Here is a way to set it up as a simple ratio
29.6 is to 38.8 as .31 is to x
29.6/38.8 = .31/x x = .40635
