1. The problem statement, all variables and given/known data so my local supermarket is doing a competition were you guess the amount of ducks in this trolley . Its summer here in Ireland I have no college so im pretty bored and said i would have a go at solving this with maths , but because its summer time it also means im having alot of trouble getting my brain to work haha. https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/11017220_732159026907620_5158370372231536002_n.jpg?oh=598d43aaae1a991054df4c2be12c6d12&oe=564A6CD2 2. Relevant equations area of a rectangle cube . Archimedes' principle ( but i cant actually get my hands on a duck haha ) 3. The attempt at a solution So I was starting out by working out the size of the container the ducks are in , Im pretty sure the base of the trolley is 1 m^2 and the ducks look to go to around 1.5 m high . this would mean the take up 1.5m^3 of space . Next my educated guess would be each duck takes up about 200 - 300 mm^3 of volume but that is only a total guess . now this is were it all went pear shaped . I was imagining the ducks are cubes and working out what space they take up then i was going to factor in some error as they arent square and probably will be less ducks than the comparing square ducks . but im confused as to how to work this out . I tryed to convert 200mm^2 into m as the container is worked out in m ( 0.2^m3 ) and then divide it in to the space ( 1.5 / 0.2 = 7.5 ) . so its pretty clear there is more than 7.5 ducks haha . But my head is like mush and really cant work out where i have gone wrong .