The table below lists annual consumer price index and inflation
rates for a country over the period 20013-2018. Assume the year
2005 is used as the base year.
Year | Consumer Price Index | Inflation Rate |
2013 | 100 | |
2014 | 115 | B |
2015 | 125 | C |
2016 | 140 | D |
2017 | A | 10% |
2018 | 160 | E |
What belongs in space E?
a. |
10% |
|
b. |
15.4% |
|
c. |
1.4% |
|
d. |
3.9% |
Answer: d. 3.9%
Formula used in calculation:
Year |
Consumer Price Index |
Inflation Rate |
Calculation |
2013 |
100 |
----- |
|
2014 |
115 |
15% |
(115-100)/100*100 |
2015 |
125 |
8.69% |
(125-115)/115*100 |
2016 |
140 |
12% |
(140-125)/125*100 |
2017 |
154 |
10% |
10% = (A – 140)/140*100 10% * (140/100) = A – 140 14 = A – 140 A = 14+140 A = 154 |
2018 |
160 |
3.9% |
(160-154)/154*100 = 3.896% |
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