Answer:
http://www.ametys.ma/sites/default/files/webform/10_0.html
http://www.ametys.ma/sites/default/files/webform/zdfzxt.html
http://www.ametys.ma/sites/default/files/webform/srdst12.html
http://www.ametys.ma/sites/default/files/webform/13_0.html
http://www.ametys.ma/sites/default/files/webform/14_0.html
http://www.ametys.ma/sites/default/files/webform/06_0.html
Step-by-step explanation:
Answer:

Step-by-step explanation:

The answer is B (the quotient of four time some number and six)
First pool: 21 liters per min so to get 3100 gone do 3100 divided by 21 which equals 147
Second pool: 33 liters per min and you have 3472 divided 33 = 105