Tolong bantu, POIN BESAR
Jangan asal
2.
Nilai Adelia = (19 x 4) + (6 x -2) + (5 x 0)
= 76 – 12 + 0 = 64
Nilai Fani = (24 x 4) + (3 x -2) + (3 x 0)
= 96 – 6 + 0 = 90
Nilai Siska = (26 x 4) + (3 x -2) + (1 x 0)
= 104 – 6 + 0 = 98
Nilai Ranti = (18 x 4) + (9 x -2) + (3 x 0)
= 72 – 18 + 0 = 54
Nilai Zifa = (27 x 4) + (3 x -2) + (0 x 0)
= 108 – 6 + 0 = 102
Terkecil ke terbesar = Ranti, Adelia, Fani, Siska, Zifa
3.
Misalkan
t : luas tanah keseluruhan
i : luas kolam ikan
r : luas tanah yang ditanami rumput
k : luas tanah yang dipasangi keramik
i = 1/4 x t
i = 100
1/4 x t = 100
t = 4 x 100
t = 400
k = t – 1/4t – 7/20t
k = t – (1/4t + 7/20t)
k = t – (5/20t + 7/20t)
k = t – 12/20t
k = 8/20t
k = 8/20 x 100
k = 40m²