tolong ya kak nomor 36 aja

Persentase pensil = 100% - (persentase pulpen + persentase penggaris + persentase buku tulis)
= 100% - (25% + 15% + 40%)
= 100% - 80%
= 20%

Penjualan pensil = persentase pensil / persentase pulpen x penjualan pulpen
= 20% / 25% x 20
= 4/5 x 20
= 4 x 4
= 16 lusin
Jadi, banyak penjualan pensil adalah 16 lusin (C).

*semoga membantu. sukses selalu ^_^

pulpen = 90° = 25%
= 20 lusin
pensil =(100-40-15-25)%
= 20%
jumlah pensil :
[tex] \frac{20}{25} \times 20 = \frac{400}{25 } = 16[/tex]