Các câu hỏi tương tự
mot so neu duoc tang le 25% thi duoc so moi . hoi phai giam so moi di bao nhieu phan tram de lai duoc so ban dau
1 so neu rang tang 25% thi duoc so moi hoi phai giam so moi bao nhieu % de duoc so ban dau
Mot so tang them 25% thi phai giam di bao nhieu phan tram so moi de lai duoc so cu
Mot so sau khi giam di 20% thi phai tang them bao nhieu phan tram so moi de lai duoc so cu
giam so A di 20% thi duoc so B . hoi phai giam so B di bao nhieu phan tram cua no de ta duoc so moi bang 20% so A ?
neu tang so A them 60% cua no thi ta duoc so B . Hoi phai giam so B di bao nhieu phan tram cua no de duoc so A ?
1 so tang them 25% thi phai giam di bao nhieu % de lai duoc so cu
Mot so sau khi giam di 20% thi tang them bao nhieu phan tram so moi de lai duoc so cu
Bai 1 : 1 so sau khi giam di 20 phan tram thi phai tang them ? phan tram so moi de lai duoc so cu?
Bai 2 : 1 so tang them 25 phan tram thi phai giam di ? phan tram so moi de lai so cu?
Bai 3 : Cho tam giac ABC co canh AB = 25cm .Tren BC lay 2 diem M va N sao cho BH = 2/3MN va NC 1/3MN,biet duong cao MH cua tam giac ABC = 12 cm.Tinh dien tich tam giac ABC
(nho lam day du day.Khong dau du coi nhu sai)