( X 10) + ( X 1) = 14 chewing-gums
( X 10) + ( X 1) = 41 chewing-gums
( X 10) + ( X 1) = 39 chewing-gums
( X 10 + ( X 1) = 27 chewing-gums
( X 10) + ( X 1) = 93 chewing-gums
( X 10) + ( X 1) = 72 chewing-gums