AQA GCSE Maths - Higher

The question did not say "what are the maximum amount of boxes the crane could lift SAFELY" it jus sed "what are the maximum amount of boxes this crane could lift" Therefore the answer is 100% definitely and totally 56! and just because 2 people who are on their way to gettin top 5 letters got a different answer doesn't mean its right
(for ur info, i was tol dtheres a gud chance i cud get a top 5 letter - well i dont think i hav now after sum v v v stupid mistakes but...i definitely know that the answer is 56!!!!)

Changing the subject, does any1 know how to works out the maximum load a bridge can take?

its for a project in school

thanxs

put lots of cars on it of the same weight untill it starts making creaking noises, then remove some cars.