hai so co tong bang 200 biet 40 phan tram so thu 1 bang 60 phan tram so thu 2 so thu 2 la bao nhieu
tong hai so la 96 tim hai so biet so thu nhat bang 50 phan tram so thu hai
tong 2 so bang 71,9 neu tang so thu nhat them 20 phan tram va so thu 2 tang them 30 phan tram thi tong se bang 88,62 . tim hai so
Tim 2 so biet 25 phan tram so thu nhat bang 1/3 so thu hai. Hieu 2 so la 15/37
hai so co hieu bang 19,5 . biet 75 phan tram so thu nhat bang 60 phan tram so thu hai . vay so thu hai la
biet 40 phan tram so A bang 50 phan tram so B va biet A -B= 19,5. tim so A.
tim tong cua 2 so thap phan biet so thap phan thu nhat co phan nguyen la so lon nhat co mot chu so va phan thap phan la so lon nhat co 2 chu so khac nhau , so thu 2 hon so thu nhat 17,3.
Cho 2 so, biet 2/5 so thu nhat bang 1/2 so thu 2. Hoi so thu nhat bang bao nhieu phan tram so thu 2 ?
biet 2/5 so thu nhat bang 1/2 so thu hai hoi so thu nhat bang bao nhieu phan tram so thu hai??