Răspuns :
15x48=720 cutii
720x28=20160 carti
20160:21=960 carti primeste fiecare librarie
720x28=20160 carti
20160:21=960 carti primeste fiecare librarie
15× 720× 20.160÷21=960 R:fiecare librarie primeste 960 cartii
48 28 189
----- ------ ---------
120 5760 =126
60 1440 126
----- --------- ---------
720 20.160 ===0
0
----------
=
48 28 189
----- ------ ---------
120 5760 =126
60 1440 126
----- --------- ---------
720 20.160 ===0
0
----------
=