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Julah umur = x = A+B
= A+A-25
= 2A - 25
B = 3/11 X (2A-25)
A-25 = 6/11A - 75/11
A-6/11A = -75/11 + 25
11/11A-6/11A = -75/11 + 275/11
5/11A = 200/11
5A(11) = 200(11)
55A = 2200
A = 2200/55
A = 40
B = A-25
= 40-25
= 15
Jumlah umur = 40+15
= 55
Maaf, kalau salah.
11/5x25=55 tahun