How far does angel run in one minute

The jones farm has 24 cows that each produce 52 quarts of milk a day. how many quarts are produced each day altogether

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Can someone answer this question? : )