Jawab no 6,7,8 jawaban dan cara

6. bunga = 960.000 – 800.000 = 160.000
bunga perbulan = 12/100 x 1/12 x 800.000 = 8.000

lama tabungan: 160.000/8.000 = 20 bulan

7. netto = 100%-2,5%/100% x 100 kg = 97,5%/100% x 100 = 97,5 kg

jual = 97,5 x 9.600 = 936.000
untung = 936.000-800.000 = 136.000
persen untung = 136.000/800.000 x 100% = 17%

8. a = U1 = 16 b = 5 n = 10
s10 = 10/2 (2×16+(10-1)5)
= 10/2 (32+45)
= 10/2 (77)
= 385