Tolong jawabin yg nomor 5-8 thx..

5.
siswa. rata2 total nilai
ipa 30 => 6,5 ==>> 195
ips 25 7 175
bhs 20 8 160
___+ ____+
jml 75 530

rata rata total :
530/75 = 7,0666
= 7,067

6. 10 siswa => 55 total : 550
(10 + 5) => 53 total : 795

795 - 550 = 245

nilai rata rata 5 siswa :
245/5 = 49