Last year the price of a dozen eggs was $1, and this year the price is $1.30. Which of the following does NOT express this price change accurately?
A) The price increased 30 percent.
B) The price increased by 30 cents.
C) If last year was the base year, the index number for this year would be 130.
D) If this year is the base year, the index number for last year would be 130.

Question

Quizplus · Accepted Answer

If this year is the base year, the index number for last year would be 77 (since $1 is 77% of $1.30). Therefore, option D does not express the price change accurately. Options A, B, and C are all correct ways to express the price change.

Last Year the Price of a Dozen Eggs Was $1