tolong dijawab yaa no 2

Sinta: Indri = 3 : 5
Indri: Vina = 4:3

Sinta : Indri : Vina =
(3 x 4) : (5 x 4) : (5 x 3) = 12:20:15

Umur Indri= 20/12+15 x 54
= 20/27 x 54
= 20 x 2 = 40 tahun