Hi guys (n gals!)

 

Ill cut straight to the chase..

 

(this part may be unnessesary but ill put it here anyway)

 

Aircraft type : Avro RJ70

 

Seating : 10 buisness class

 

60 Eco class

 

Buisness class tickets cost £105 (x10 = £1050)

 

Eco class tickets cost £70 (x60 =£4,200)

 

Grand total : £5,250

 

Fuel required for trip 4820KGS (6335LBS)

 

Fuel cost today is £2.29 a litre.

 

Here's the bit i cant seem to figure out ( to early, not enough coffee..i dunno...total mind blank)

 

If 1 litre of liquid weights 2.2 pounds (1kg), what is the mathimatical equasion i need to do in order to get a price for the fuel??

 

My attemp at working this out is as follows :

 

If 1 litre weights 1KG, and i have 4820KG, then i have 4820 litres (?) x £2.29 = £11037

 

But that price seems rather high...and making a loss of £5,787!!...

 

So can some maths genius educate me...have i done the maths right here?..seems not

 

Thanks!

Indeed, the problem with your calculations is that the density of water is 1kg per liter, however the density of jet fuel is a little over .8kg per liter. That Should solve your problems.

 

Also keep in mind that tickets are not all sold at the same price and that typically the last 40% of seats will be sold a bit higher, the last 20% even higher, and the last 10% of seats you'd pay a heck of a lot more for.

 

Then add in things like baggage if that's not included in the ticket price, duty free people buy on board etc.

 

Regards,

Ró.

Thanks for reply Ró

 

So if i work this out right, it should look like this (?)

 

4820 (lbs), devide 0.8 = 6025 (litres) x 2.29 = £13,797. (somthings not right here)

 

Yeah, im struggling, lol

" . . . however the density of jet fuel is a little over .8kg per liter. That Should solve your problems."

 

Indeed. Oil floats on water -- that's the clue :Nerd:

Thanks for reply Ró

 

So if i work this out right, it should look like this (?)

 

4820 (lbs), devide 0.8 = 6025 (litres) x 2.29 = £13,797. (somthings not right here)

 

Yeah, im struggling, lol

 

Okay first things first, that's 4820Kg not Lbs, in Lbs that's 10,604Lbs.

So correct it is 6025 liters of jet fuel, jet fuel is roughly €2.50 per gallon at the moment, so that's roughly €0.66 per liter, so that's a total fuel bill of €3,964 plus what ever taxes and duties there may be.

 

Regards,

Ró.

Yeah, as Ronan (sorry the accents don't work on my tablet) has mentioned the problem is that you're assuming a fuel price that is much too high. 2.29 GBP per litre is way too much. Current price for petrol here in the Netherlands is 1.83 euro / litre, which is 1.47 GBP per litre. Aviation fuel is less highly taxed and so is cheaper than car fuel.

I recall a broadcast of CNBC's "American Airlines-A Week in the Life" where a crew and newsman Peter Greenberg filmed the "goings-on" at the airline.

 

There were brief snippets featuring American's flight #1 JFK to LAX, the "Transcon" as they called it that were shown during the broadcast and when all was said and done Peter Greensberg tallied up the cost's vs. profit and I was amazed to hear that the profit was less than $100 for the entire flight. If it hadn't been for brisk in-flight sales the flight would have resulted in a net loss.

 

Cost cutting is running rampant everywhere, here is an example of airline silliness:

 

I recall a part of the broadcast where the ex-ceo of AA Bob Crandall spoke about cost cutting over a 4 year period I believe where he would travel and meet with station chiefs at various airports and in one particular case he said to a manager "You've got to find a way to cut cost's, what does this guy here do? the station chief replied "he's the night watchman"

 

Bob Crandalll said "Ok here's what you are going to do, put the night watchman on 3 nights a week instead of 5, the thieves aren't going to know what night he's at work or not. The manager replied "I don't know if it will reduce theft but I will try it." and he did.

 

Bob Crandall returned the following year and asked the manager "how can we cut cost's?" The station chief replied "I don't know where to cut any more costs."

 

Bob Crandall said "Ok here's what you are going to do, you are going to fire the part-time night watchman and put a guard dog in the warehouse 5 night's a week and put a sign outside the warehouse that reads SAVAGE DOG." The manager said "I don't know, I don't want to do that" but he did as Crandall said and theft was almost non-existant.

 

The following year Bob Crandall returned and asked "how can we cut cost's?" The station chief replied "I don't know where to cut any more costs" Crandall replied "Ok here's what you are going to do, put the guard dog on 3 nights a week instead of 5, the crooks won't know when the guard dog is working" and theft was almost non-existant.

 

The following year Bob Crandall returned and asked "how can we cut cost's?" The station chief replied "I don't know where to cut any more costs, there's nothing left." Crandall replied "Ok here's what you are going to do, don't feed the guard dog for a whole day and make a recording of him while he's snarly and vicious, then get rid of the guard dog and play the recording at night, the crooks won't know there's no guard dog on duty" and theft was eliminated completely.