An index for 2018 is 120 and an index for 2020 is 150, both with 2015 as the base year. What is the 2020 index with 2018 as the base year?

Correct answer: B. 125.00

  • A. 120.00
  • B. 125.00
  • C. 130.00
  • D. 135.00

Explanation

To shift the base to 2018, divide the 2020 index by the 2018 index and multiply by 100: 150 ÷ 120 × 100 = 125. The rebased index therefore shows a 25 percent rise from 2018 to 2020.

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