Disuatu kelas terdapat 60 siswa jika pada suatu ulangan matematika 12 orang mendapat nilai 9 dan 24 orang menadapat nilai 8 lalu 24 orabg mendapat nilai 7 berapa rata rata nilai siswa di kelas

x the first account interest = x/100*2 = 2x/100 (x + 800)/100 * 4 =( 4x + 3200)/100 2x/100 + (4x + 3200)/100 = 92 2x + 4x + 3200 = 9200 6x = 6000 x = 1000 C is the answer

Answered by pepe11 | 2024-06-10

Answer: Option 'C' is correct. ;

Answered by RenatoMattice | 2024-06-12

The amounts invested are $1,000 at 2% and $1,800 at 4%. Therefore, the answer is option 'C'.
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Answered by RenatoMattice | 2024-09-26

Diketahui12 orang dapat nilai 924 orang dapat nilai 824 orang dapat nilai 7DitanyaRata - rataDijawab[tex] = \frac{(12 \times 9) + (24 \times 8) + (24 \times 7)}{60} \\ \\ = \frac{108 + 192 + 168}{60} \\ \\ = \frac{468}{60} = 7.8[/tex]KesimpulanMaka jawabannya 7,8

Answered by aquila0152 | 2025-07-04