When the base year of a fixed base index series is changed from 2010 to 2015, the new index for 2020 is obtained by:
A. Adding the old indices
B. Dividing old index by old index of new base year and multiplying by 100
C. Taking the geometric mean of the two indices
D. Multiplying old index by 100/index of new base year
Answer: Option B
Solution (By JKSSB Mock Tests)
New index = (Old index for target year / Old index for new base year) × 100.
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