
Answer:
b. 116
Explanation:
The calculation of Consumer Price Index is shown below:-
CPI = ((Base year basket quantities Ă— current year price) Ă· (Base year basket quantities Ă— Base year prices)) Ă— 100
= ((50 Ă— $1.50) + (100 Ă— $1.10)) Ă· ((50 Ă— $1.20) + (100 Ă— $1.00)) Ă— 100
= (185 Ă· 160) Ă— 100
= 115.6
0r 116
So, for computing the consumer price index for 2018 we simply applied the above formula.