Final answer:
To calculate the number of quarts of paint needed to paint the flagpole, we need to divide the total height of the flagpole by the height covered by one quart of paint.
Step-by-step explanation:
To find out how many quarts of paint Karl will need to paint the flagpole, we need to divide the total height of the flagpole by the height covered by one quart of paint. Let's call the total height of the flagpole 'h'. We know that 1 quart of paint covers every 20 feet of the flagpole. So, the number of quarts of paint needed will be equal to (h/20).
In this case, the height of the flagpole is given as 's' feet. So, (h/20) can be written as (s/20).
To calculate the value of 's', we would need more information.