400,3 : 5 =  80,06

Số học sinh khá là:

       48-(48x5/12)=28(H/S)

nha bạn          

The best activities for teenagers are hanging out with family or friends, and take part in comunity activities. Because teenagers now are all like indoor activities istead of outdoor activities like before. So family and school should create conditions for them to join in some community activities like camping, sightseeing, etc. If teenagers don't like community activities, family can create conditions for them to hanging out with friends or take them to some places they like such as cinema, amusement parks, etc.

Mik nghĩ vậy!!!!! Tick cho mik nha!!!!!!!!!!!!!

bạn có thể làm đầy đủ đk ko ạ hello hello