hai don vi bo doi co tat ca 70 nguoi.Neu chuyen tu don vi thu nhat sang don vi thu hai mot so nguoi dung bang so nguoi cua don vi thu hai thi don vi thu nhat nhieu hon don vi thu hai la 6 nguoi.Hoi luc dau moi don vi co bao nhieu nguoi?
hai doi cong nhan co 120 nguoi biet neu chuyen 18 nguoi cua doi 1 sang doi hai thi doi hai co so cong nhan = 5/7 so cong nhan doi 1
b1 ]co 6 nguoi lam xong moot cong viec trong 5 ngay . hoi muon lam xong cong viec do trong 3 ngay thi can co bao nhieu nguoi ? [ biet nang suat cua moi nguoi nhu nhau]
b2 trong doi thi dua lam ke hoach nho lop 5a va lop 5b thu nhat duoc tat ca 215 kg giay vun . trong do , so giay vun lop 5b thu duoc bang 3/ 2 so giay vun cua lop 5a . hoi moi lop thu duoc bao nhieu kg giay vun ?
tong so gao chua trong ba kho la 58,8 . nguoi ta chuyen 3,5 tan tu kho thu nhat sang kho thu hai roi chuyen 8,5 tan gao tu kho thu hai sang kho thu ba thi so gao o kho thu hai gap doi so gao o kho thu nhat va bang mot nua so gao o kho thu ba . tinh so tan gao moi kho ban dau ?
Cau 1: luc 8h 1 nguoi di xe dap tu A->B, cach A 10 km. Biet rang nguoi do den B luc 10h 30phut. Tinh van toc cua nguoi di xe dap.
Cau 2: Chu vi cua hinh chu nhat la 18cm. neu giam chieu dai di 20% va tang chieu rong 25% thi P khong thay doi. tinh S hinh chu nhat do.
Cau 3: nguoi thu nhat di tu A->B van toc 30km/h. 20 phut sau, nguoi thu hai cung di tu A->B van toc 36km/h. Nguoi thu 2 den B sau nguoi thu nhat 5 phut. Hoi quang duong A->B dai bao nhieu?
Cau 4: ti so cua 2 so la 7/12. neu them 10 don vi vao so thu 1 thi ti so cua 2 so la 3/4. Tinh tong 2 so.
mik danh bang may tinh nen ko viet duoc dau. sorry nha. cam on nhieu!!!
tong cua 4 so la 63 neu bot so thu nhat di 2 them 2 vao so thu hai gap doi so thu ba va chia doi so thu tu thi ta duoc 4 so bang nhau
Co hai doi tham gia thi the thao. Luc dau ti so nguoi o doi 1 va doi 2la 2/5 . Sau do nguoi ta bo sung them vao moi doi 5 nguoi luc nay so nguoi doi 2gap doi so nguoi o doi 1. Hoi luc dau tong so nguoi ca hai doi la
co 2 doi tham gia thi the thao . Luc dau ti so 0o doi 1 va doi 2 la 2/5 . Sau do nguoi ta bo sung them vao moi doi 5 nguoi . Luc nay so nguoi doi 2 gap 2 lan so nguoi doi 1. Hoi luc dau tong so nguoi cua 2 doi la bao nhieu ?
Hai nguoi co tat ca 220000dong nguoi thu nhat tieu het 1phan 3 so tien cua minh nguoi thu hai tieu het 3phan 4 so tien cua minh thi so tien con lai cua hai nguoi bang nhau Tinh so tien luc dau cua moi nguoi