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1 buku = 1.200
1 bolpoin = 800
1 penghapus = 500
Dina membeli 4 buku 8 bolpoin 2 penghapus
4 × 1.200 = 4.800
8 × 800 = 6.400
2 × 500 = 1.000
4.800 + 6.400 + 1.000 = 12.300
a). 12.300 × 25/100 = 3.075
12.300 - 3.075 = 9.225
b). 9.225 × 200 / 100 = 18.450
8.
dua batang lidi yang sama = 5 1/2 = 11/2
dua batang lidi yang lain = ?
Luas = 46 3/4 = 187/4
187/4 - 11/2 = 187/4 - 22/4 = 165/4
165/4 ÷ 2 = 82,5
maaf kalau salah
semoga bermanfaat