\(\frac{191919}{373737}=\frac{19}{37}\)
\(\frac{39}{65}=\frac{3}{5}\)
C. 25
\(\frac{191919}{373737}=\frac{19}{37}\)
\(\frac{39}{65}=\frac{3}{5}\)
C. 25
1 .trung binh cong cua hai phan so la 5/12 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 2/3 .tim hai phan so do .
2.trung binh cong cua ba phan so la 13 /36 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 19/36 ,cho biet phan so thu hai lon hon phan so thu ba 1 /12. tim ba phan so do .
trung binh cong cua so a va b la 432,5. trung binh cong cua so a va c la 368 , trung binh cong cua so b va c la 420,5 . tim a, b, c
a, Tìm hai so Avà B biet 75% cua tong Ava B la 150.Trung binh cong cua hieu (a - b) va 20 la 30.
b, Neu lay 40% cua so 185 chia cho 29 thi so dư la bao nhieu?
Trung binh cong cua so a va b la 432,5 trung binh cong cua so a va c la 368 trung binh cong cua so b va c la 421,5 . Vay so b la?
Tim so trung binh cong cua cac so sau
a 25 , 42 ;17, 29 va 20,29
bac co 65 vien bi ha co 65 vien .tim so bi cua hai biet so bi cua hai bang trung binh cong so bi ua ban.
cho 3 phan so,biet trung binh cong cua chung la 7/6.neu tang so thu nhat len hai lan thi trung binh cong cua chung la 41/30.neu tang phan so thu hai len hai lan thi trung binh cong cua chung la 13/9.timphan so be nhat trong ba phan so?
trung binh cong cua a va b la 8,5 .trung binh cong cua b va c la 8,1 .trung binh cong cua a va c la 7,35 . tim so lon nhat ?
trung binh cong cua 2 so la 65.biet so be bang 3/5 so lon.tim moi so