Tim boi chung cua 15 va 25 ma so do ngo hon 400

so hs cua 7a,7b,7c cua1 trường ti le voi 10,9,8.so hs lớp 7a nhiều hon so hs lớp 7b la 10 em. Hoi moi lớp co bao nhiều hs

tim 1/4 cua 8

2/5cua a = 10. tim a

tong cua hai so la 25% thuong cua hai so cung la 25% tim hai so

trong buoi le phat thuong cua1 truong co so hs xuat sac bang so hs gioi va cung bang so hs kha . moi suat phan thuong cua hs gio bang 1/2 suat cha hs xuat sac va gap 2 lan suat hs kha . tong so giay phat thuong la 840 tap giay . hoi co bn tap giay phat thuong cho hs moi loai'

cho so lon la 48 nhu vay so lon bang 400% so nho tim so nho . so nho bang bao nhieu phan tram so lon

cho so lon nhat la 48 nhu vay so lon = 400 % so nho tim so nho , so nho = ? % so lon '

traloi nhanh k cho

tong cua 2 so la 1480 so be = 25% so lon tim so lon

mot so co ba so ma chu so  hang tram la 4 hoi  chu so  4 ta dc so co 2 chu so . tong cua 2 chu so la 400 . tim 2 so