Các câu hỏi tương tự
Mot so sau khi giam di 20% thi phai tang them bao nhieu phan tram so moi 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
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
mot so sau khi giam 20phan tram thi phai tang bao nhieu phan tram so moi de lai duoc so ban dau
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)
cau 1 : mot cua hang ban lai 20% so voi gia ban . Hoi cua hang lai bao nhieu phan tram so voi gia von
cau 2 : de dien tich mot hinh chu nhat tang len gap doi ma chieu rong chi tang them 25% thi chieu dai phai tang them bao nhieu phan tram
cau 3 : neu giam do dai canh cua mot hinh vuong di 10% thi dien tich cua hinh vuong do giam di bao nhieu phan tram
cau 4 : neu tang do dai canh cua mot hinh vuong them 10% thi dien tich cua hinh vuong do tang them bao nhieu phan tram
Tang so A them 25% cua no thi ta duoc so B.Hoi phai giam so B di bao nhieu phan tram cua no de ta duoc so A.
1 so tang them 25% thi phai giam di bao nhieu % de lai duoc so cu
bai 2 1 so sau khi giam di 20/100 thi phai tang them ...phan tram so moi de lai duoc so cu