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maka
e = f + 8 ....... (a)
e : f = 5 : 3 ... (b)
maka
e/f = 5/3
⇒ 3e = 5f
⇒ 3(f + 8) = 5f
⇒ 3f + 24 = 5f
⇒ 2f = 24
⇒ f = 24/2
⇒ f = 12 tahun
dan
e = f + 8
⇒ e = 12 + 8
⇒ e = 20 tahun
Jadi, umur Eni = 20 tahun
Terimaasih semoga membantu
* e = f + 8
e/f = 5/3
3e = 5f
3(f+8) = 5f
3f + 24 = 5f
24 = 5f - 3f
24 = 2f
f = 24/2 = 12
e = 8+f
e = 8 + 12
e = 20 tahun...........