Net monthly income of an employee was ₹60000 per month in 2018 and ₹72000 per month in 2021. If the consumer price index in 2018 was 150, then the consumer price index for the year 2021, given that income of the employee is liked consumer price index is :

180

The correct answer is Option (2) → 180

The CPI is linked to income,

$\frac{\text{CPI in 2021}}{\text{CPI in 2018}}=\frac{\text{Income in 2021}}{\text{Income in 2018}}$

$⇒\text{CPI in 2021}=150×\frac{72000}{60000}$

$=180$