Mathematics: In 1983, a winter hat cost $12.95. today, a winter hat costs $24.50. if the cpi is 219, what is the percent relation of the actual price of a winter hat to the expected price? a. the actual price is 39.3% higher than the expected price. b. the actual price is 15.8% higher than the expected price. c. the actual price is 13.6% lower than the expected price. d. the actual price is 29.8% lower than the expected price.

In 1983, a winter hat cost $12.95. today, a winter

Ответ:

bwheele6791

07.06.2020

CPI - Consumer Price Rate;
CPI = ( expected price ) : ( price in 1983 ) x 100
219 = ( x : 12.95 ) x 100
x : 12.95 = 2.19
x = 2.19 x 12.95 = $28.36 ( expected price )
p = ( 24.50 x 100 ) / 28.36 = 86.4 %
100 % - 86.4 % = 13.6 %

C ) The actual price is 13.6 % lower than the expected price.