Question

In a recent air quality​ study, there were 64 unhealthy air quality days in City A. This is 4 more than twice the number of unhealthy air quality days in City B. How many unhealthy air quality days were there in City​ B?

Answer 1

The answer to your question is: 30 days

Explanation:

City A has 64 unhealthy air quality days this is 4 more than twice the number of unhealthy air quality days in City B.

# unhealthy days in city A = 64

# unhealthy days in city B = B

Equation

64 = 2B + 4

64 -4 = 2B

60 = 2B

B = 30 days