Question

{kak kalo bisa caranya make kertas supaya lebih jelas}


nomor 4 digambar kurang jelas
A=1 2/7 B. Jika jumlah A dan B =80. Tentukan selisih A dan B

Answer 1

1) A = 1 1/3 B => A = 4/3 B => A : B = 4 : 3
  A + B = 63
A = 4/7 x 63 = 36
B = 3/7 x 63 = 27

2) A = 1 2/3 B => A = 5/3 B => A : B = 5 : 3
 A - B = 36
A = 5/2 x 36 
   = 90
B = 3/2 x 36
    = 54

3) A = 1 2/5 B => A = 7/5 B => A : B = 7 : 5
A - B = 24
A = 7/2 x 24
   = 84
 B = 5/2 x 24
     = 60

4) A = 1 2/7 B  => A = 9/7 B ==> A : B = 9 : 7
A + B = 80 

Nilai A = 9/16 x 80
            = 45
Nilai B = 7/16 x 80
            = 35

Selisih A dan B = 45 - 35
                           = 10

5) A = 1 3/5 B = A = 8/5 B = A : B = 8 : 5
  A = 64
  B = 5/8 x 64
     = 40
Jumlah = 64 + 40 = 104