Gallons per Hour Calculation

[sdowney717]

My brain is tired today, so is this right?

Say twin engine boat going slow does this

goes 16 miles uses 8 gallons at 6 miles an hour is 2 mpg.

Is the gallons per hour is 2.67??

[DotDun]

Originally Posted by sdowney717

My brain is tired today, so is this right?

Say twin engine boat going slow does this

goes 16 miles uses 8 gallons at 6 miles an hour is 2 mpg.

Is the gallons per hour is 2.67??

No, it's 3 gallons per hour. (6 miles in one hour @ 2mpg uses 3 gallons)

[Wotname]

I would have thought 3 gallons per hour

[Wotname]

DotDun is faster than Wotname

[sdowney717]

Thanks for that

Then does this make any sense?
change the numbers but intuitively seems wrong
boat goes 16 miles uses 8 gallons at 30 miles an hour equals 2.0mpg

30/2 = 15 gph ?

[Wotname]

Correct!

[David M]

....and beats the competition to the punch this time.

[Wotname]

Originally Posted by sdowney717

Thanks for that

Then does this make any sense?
change the numbers but intuitively seems wrong
boat goes 16 miles uses 8 gallons at 30 miles an hour equals 2.0mpg

30/2 = 15 gph ?

Intuitively it may reside in the mind of the beholder
For me, if I use 8 gallons and I expect 15 gph, I think I must have travelled a bit over 30 minutes. Therefore at 30 mph, I must have travelled a bit over 15 miles in that time so 16 miles seems to be intuitively correct

Maybe after a nap, this will seem better for you

[Wotname]

Originally Posted by David M

....and beats the competition to the punch this time.

Now where is DD

[DumnMad]

16miles/6mph =2.6667 hours.
8gals/2.6667hours=3gals/hour