theo đề bài ta có : a + 13 + 54 + 13 . 5 = 678678
=> a + 13 + 54 + 65 = 678678
=> a + 132 = 678678
=> a = 678678 - 132
=> a = 678546
cho a bang 8 phan 11 nhan 13 cong 8 phan 13 nhan 15 cong ... cong 19 nhan 21 va b bang 36 phan 231
cho a bang 8 phan 11 nhan 13 cong 8 phan 13 nhan 15 cong... cong 8 phan 19 nhan 21 va b bang 36 phan 231
Mot doi cong nhan sua duong co 30 cong nhan nu va 75 cong nhan nam neu tang them 5 nu va chuyen di 5 nam thi luc nay so cong nhan ca doi bang bao nhieu % so cong nhan nu.
mot to cong nhan co so nu bang 1/3 so nam.sau theo cong viec nen da thay doi 3 cong nhan nam bang 3 cong nhan nu . vi vay so cong nhan nu bang 2/3 so nam . hoi co bao nhieu cong nhan
Mot doi cong nhan sua duong co 30 cong nhan nu va 75 cong nhan nam neu tang them 5 nu va chuyen di 5 nam thi luc nay so cong nhan ca doi bang bao nhieu % so cong nhan nu.
trong mot nha may co 760 cong nhan biet 1/3 so cong nhan co ddoi thu nhat bang 1/5 so cong nhan cua doi thu hai hoi moi doi co may cong nhan
o 1 nha may co 3 to cong nhan neu lay 20% so cong nhan o to 1 chia deu cho 2 to con lai tyhi so cong nhan o 3 to bang nhau neu to 1 co them 8 cong nhan thi so cong nhan cua to 1 bang tong so cong nhan cua 2 to kia hoi to 1 co ? cong nhan
x cong x cong x cong1/2 nhan 2/5 nhan x cong 8/10nhan x bang 136 giup minh voi cam on
Mot nha may cuoi nam so cong nhan duoc khen, neu them 2 nguoi thi duoc 1/5 tong so cong nhan,so cong nhan khong duoc khen neu giam 14 nguoi thi bang 1/2 so cong nhan. Hoi co bao nhieu cong nhan duoc khen?