In the new dormitory of 20 three-room apartments 40 two-room and 4 one-room how many students in the hostel if at each of them the separate room

395

1) 20 * 3=60 students live in 3rd whom apartments

2) 40*2=80 students live the в2nd - x a lump apartments

3) 4*1=4 students v1 a lump

4) 60+80+4=144 students of all

289
Answer add