trung bình cộng hai số là 1000, biết số thứ nhất hơn số thứ hai là 640 .tìm hai số đó ?
giải giúp mình !
K
Khách
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PT
1
CM
21 tháng 10 2017
Tổng hai số là: 1000 x 2 = 2000
Số thứ nhất : (2000 + 640) : 2 = 1320
Số thứ nhất : 2000 - 1320 = 680
LT
4
AK
11 tháng 3 2018
Tổng 2 số là :
1000 x 2 = 2000
Số thứ nhất là :
( 2000 + 640 ) : 2 = 1320
Số thứ hai là :
2000 - 1320 = 680
Đ/s : Số thứ 1 : 1320
Số thứ 2 : 680
Tk mk nha !!!
SD
18 tháng 8 2017
tong 2 so la: 262x2= 524
so1 la:(524 + 226) :2 =375
so2 la :524 - 375= 149
18 tháng 8 2017
Tổng của hai số là
262x2=524
Số thứ hai là
(524-226):2=149
Số thứ nhất là
(524+226):2=375
Đáp số.......
Nếu giảm số thứ hai đi 468 đvị thì được số thứ nhất => Số thứ hai hơn số thứ nhất 468 đvị
Tổng hai số là
1000x2=2000
Số thứ nhất là
(2000-468):2=766
Số thứ hai là
(2000+468):2=1234
Đáp số.........
24 tháng 8 2016
Trung binh cong cua ca 4 so la: (4,2-0,6):3=1,2
So thu tu la:1,2-0,6=0,6
Dap so : 0,6
22 tháng 8 2016
(a+b+c)/3=4.2
(a+b+c+d)/4=d+0.6
hay (4.2+d)/2 =d+0.6
4.2+d=2d+1.2
d=3
9 tháng 10 2021
Số thứ hai là:
\(2000\cdot\dfrac{3}{5}=1200\)
Số thứ nhất là
2000-1200=800
7 tháng 11 2021
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Tổng hai số là: 1000 x 2 = 2000
Số thứ nhất : (2000 + 640) : 2 = 1320
Số thứ hai : 2000 - 1320 = 680
Số thứ nhất 1320
Số thứ hai 680