Step-by-step explanation:
Total area of merged figure = area of vertical rectangle + area of horizontal rectangle.

Answer:
I dont know math
Step-by-step explanation:
like bro i havent been paying attention to school that I havent learn stuff and I'm in 9th grade
3 gallons per second
Or
1/3 second per gallon
Just do 150 gal over 50 seconds
Or reverse it to 50 sec over 150 gallons
So you get 3 gallons occur each 1 second or the it takes 1/3 of a second for each 1 gallon to flow