Nomor 17 caranya gimana tolong dong

cari jumlah seluruh siswa:
misal jmlh siswa=x
[tex]15= \frac{25}{100}x \\ 25x = 15 \times 100 \\ 25x = 1500 \\ x = \frac{1500}{25} \\ x = 60[/tex]
cari persetase dangdut:
100-(24+25+16)
=100-65
=45℅

a. siswa gemar dangdut
misal=y
[tex]y = \frac{45 \times 60}{100} \\ y = \frac{2700}{100} \\ y = 27[/tex]

b. siswa gemar rock
misal z
[tex]z = \frac{16 \times 60}{100} \\ z = \frac{960}{100} \\ z = 9.6[/tex]