if she has two dogs and she feeds them both daily, then she feeds them kg of food every day
it is then a simple division
Last edited by DopeSk1llz; 04-06-2012 at 14:32.
Really? To that extent? It a much simpler question than you think.
(Original post by GreenLantern1)
Some Linear Programming should do the trick
All you need to solve the problem is two calculations, Linear Programming would just make things more complex.
Last edited by jokosor; 04-06-2012 at 14:39.
(Original post by zed963)
Susan has 2 dogs
Each dog is fed 3/8 kg of dog food each day.
Susan buys dog food in bags
Each bag weighs 14kg
For how many days can Susan feed the 2 dogs from 1 bag of dog food
You must show all your working.
I keep on getting 1 day but at the back of the book it says 18 days
I did 14/8 *6 = 10.5kg that clearly will only last one day I don't know what I'm doing wrong here.
14/1 ÷ 3/8
Forgot about the fact it's a fraction for a minute. If you had a 14g bag, and a whole number portion then you'd automatically divide the bag by the portion. If the question said something like she has 14kg, and uses 2kg a day, you'd divide 14 by 2. When you have a fraction, all you have to do is make sure both of the numbers are fractions, that can easily be done by putting the whole number over one.
14/1 x 8/3 =
When dividing fractions, you can flip the second one and just times like normal.
112/3 = 37
You then get a fraction which can be divided. It ends up as 37 point something, always round it down if you're dealing with something like this.
37 ÷ 2 = 18 days
Two dogs, so divide by two.
Probably an easier method, but that's what my instinct told me to do. ;D
Last edited by Deziah; 04-06-2012 at 14:49.