How do you convert gallons per minute to liters per second?

Question

Water flows from a kitchen fauset at the rate of 8.5 gallons per minute. What is the rate in liters per second?

Answer 1

1 US gallon = 3.78541 liters

1 minute = 60 seconds

Remember how we can multiply anything by 1 and it doesn't change?  We can multiply by (3.78541 liters / 1 gallon) because (3.78541 liters / 1 gallon) = 1.  We can do this:

(8.5 gallons / 1 minute) * (3.78541 liters / 1 gallon)

There's a gallon on top (gallons/minute) and a gallon on the bottom (liters/gallon), so the gallons cancel out, leaving us with this:

(8.5 / 1 minute) * (3.78541 liters / 1)

(8.5 / 1) * (3.78541 / 1) liters / minute

32.175985 liters / minute

32.175985 liters / minute * (1 minute / 60 seconds)

32.175985 liters * (1 / 60 seconds)

about 0.5362664167 liters / second

Answer:  About 0.5363 liters / second