Nếu chuyển dấu phẩy sang trái 1 hàng thì số đó gấp 10 lần
Nếu chuyển dấu phẩy sang phải thì số giảm 10 lần
Ta có:A+B+C=221,445
10 x C+10 x A+C=221,445
10 x C+100 x C+C=221,445
(10+100+1)xC=221,445
111 x C=221,445
C=221,445:111
C=1,995
Khi đó A là:1,995x10=19,95
Vậy số A là:19,95
Nếu chuyển dấu phẩy của A sang trái 1 hàng nghĩa là B gấp 10 lần A,chuyển sang phải 1 hàng nghĩa là A gấp 10 lần C
=> B gấp 10 lần A,gấp 100 lần C.Tổng số phần bằng nhau là: 100 + 10 + 1 = 111 [ phần ]
Số A là: 221,445 : 111 x 10 = 19,95
Vậy A = 19,95
NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!
số A bằng 19,95 các bạn nhé! đúng 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
19,95 nhé ! Chính xác 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000% luôn đấy!
