Tom and some friends went to a movie. the show started at 2: 30 p. m. and ended at 4: 15 p. m. how long did the movie last?

My math teacher told my class to "steal" a 6th grade fraction word problem from the internet, word problems? : -p requirements: only a 1 step word problem. needs to be complex.

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Extra points! find the missing dimension! need asap