Problema Solution
Gregor walked 2/30 mile to his biology class, 4/30 mile to his art class, 5/30 mile to his calculus class, and then back to his dormitory. If he walked 1 mile altogether, how far did he walk from his calculus class to his dormitory?
Answer provided by our tutors
Hi,
Let x be the distance between calculus class and dormitory.
we have 2/30 + 4/30 + 5/30 + x = 1 ( beacause he walked 1 mile altogether )
then x = 1 - (2/30 + 4/30 + 5/30 ) = 1 - ( 11/30) = (30 - 11)/30 = 19/30
hence he walks 19/30 mile from his calculus class to his dormitory.
good luck