Question

Chip's Chocolate Factory has an agreement with its workers to completely index the wages of its employees to inflation in the CPI. Chip's currently pays its production line workers $20 an hour and is scheduled to index their wages today. If the CPI is currently about 120 and was 100 a year ago, by how much should Chip's increase the hourly wages of its workers?
Select one:
a. $1.00
b. $4.00
c. $0.65
d. $0.58

plaese help