Các câu hỏi tương tự
tim hai so biet 40% so thu nhat bang 1 phan 4 so thu 2 tong cua hai so la 13 phan 23
tong cua 2 so bang 68,9 biet neu tang so thu nhat them 20% so thu 2 them 50% thi tong 2 so la 95,4 tim 2 so
tong cua 3 so la 410 tim so thu ba biet 2/5 so thu nhat bang 1/4 so thu hai va bang 4/15 so thu ba
1. tbc cua 3 so la 19/60 .neu gap so thu nhat len 4 lan thi tbc cua chung se la 13/20 .tim 3 so , biet so thu hai hon so thu ba 1/6
2. trong mot phep tru co tong so bi tru ,so tru va hieu la 1998.biet hieu so bang 4/5 so tru .hay tim so bi tru va so tru , hieu
Tong 2 so la 45 . Tim moi so khi biet 75% so thu 1 bang 50% so thu 2 .
tong cua 2 so bang 68,9 biet neu tang so thu nhat them 20% so thu 2 them 50% thi tong 2 so la 95,4 tim 2 so
tong cua 2 so la 280 , biet rang 30% so thu nhat bang 20% so thu hai . tim so thu hai
tim hai so biet 40% so thu nhat bang 1/4 so thu hai. tong hai so la 13/23
tong cua 2 so la 128,5. biet 1/2 so thu nhat bang 1/3 so thu 2 . tim hieu cua 2 so