Question

Robby consumes only carrots and potatoes. In 2019, carrots cost $1 each, potatoes cost $2 each, and Robby buys 50 carrots and 100 potatoes. In 2020, carrots cost $2, potatoes cost $1, and Robby buys 150 carrots and 50 potatoes. Consider 2019 as the base year wherein the consumer basket is fixed. If the typical consumer basket is composed of 75 carrots and 50 potatoes, what is the consumer price index for 2020? 

1. 1. 7.143

   2. 5. 341

   3. 3. 145

   4. 1. 143