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1) Ibu : Ayah = 48 : 56
= 6 : 7
Jawaban = C
2) A : B = 4 : 6
= A + B/B - A
= 4 + 6/6 - 4
= 10/2 = 5
Jawabannya D
3) A : B = 5 : 7
= B/B-A
= 7/7 - 5
= 7/2 = 3 1/2
Jawabannya C
4) A : B = 6 : 9
= 6/9 x 63
= 6 x 7
= 42
B =63 A = 42
= 63 - 42
= 21
Jawabannya B
5) A : B = 5 : 8
= 5/8 - 5 x 36
= 5/3 x 36
= 5 x 12 = 60 ( A )

= 8/8 - 5 x 36
= 8/3 x 36
= 8 x 12 = 96 ( B )

A + B = 96 + 60
= 156
Jawabannya A