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= Umur Nanda =
= 5/2 × 15/2
= 75/4
= 18,75 tahun
= Umur Uli =
= 18, 75 - 15/2
= 1875/100 - 750/100
= 1125/100
= 11, 25 tahun
Jadi, Umur Nanda = 18, 75 tahun, Umur Uli = 11, 25 tahun.
Selisih umur mereka =
= 18, 75 - 11, 25
= 7, 50
= 7, 5 tahun
= 7 1/2 tahun
Jadi umur Nanda = 18, 75
umur Uli = 16, 25
Jadi selisih umur mereka
= 18, 75 - 16, 25
= 2,50
= 2, 5