You are told that sprinklers run for the same amount of time. lets refer to this time as T.
you are told that 4 sprinkles run one at a time for 50 minutes total. that means that T should be 50/4 = 12.5 minutes = 12 minutes and 30 seconds
Antagonist - a character or group of characters which stand is opposition to the protagonist or the main character
Divide $71,000 by 24 because there are 12 months in a year and he gets paid 2 times a month. I got $2,958.33