Question

One gas station pumps gas at a rate of 10 gallons per 90 seconds.
Another station pumps gas at a rate of 8 gallons per 60 seconds.
Which gas station pumps gas more quickly?

Answer 1

Answer:

Read answer below :)

Step-by-step explanation:

So you know that it takes 90 seconds for 10 gallons, right? So you know it's 9 seconds per gallon, removing the 0's (which is the easiest way to simplify).

then you take 8 divided by 60 to find out how long it takes for one gallon.

My math shows this:

A = 9 seconds per 1 gallon

B = 7.5 seconds per 1 gallon

60 seconds for 8 gallons, 30 seconds for 4 gallons, 15 seconds for 2 gallons, 7.5 seconds for 1 gallon. (Notice how I divided by two each time until it was simplified)