tolong di jawab please.....

2. Diketahui :
T.a = 170 cm
T.w = 160 cm
T.r = P
T.m = 165 cm
T.f = 160 cm
T.rata2 = 165 cm

T.rata2 = (T.a+T.w+T.r+TM+T.f)/5
160 = (170+160+P+165+160)/5
160 = (655 + P) / 5
160 = 655/5 + P/5
160 = 131 + P/5
P/5 = 160-131
P/5 = 29
P = 29 × 5
P = 145 cm

3. Diketahui :
Jumlah siswa 120
Menari 25%
Nyanyi 45%
Baca puisi ???
Tari+Nyanyi+Puisi = 100%
Puisi = 100-25-45
Puisi = 30%
Puisi = 30/100 × 120
Puisi = 36 siswa