toko pakaian memberi diskon 30% untuk setiap

Kemeja :
= Rp150.000 - (30/100 × Rp150.000)
= Rp150.000 - Rp45.000 × 2
= Rp105.000 × 2
= Rp210.000

Jeans :
= Rp250.000 - (20/100 × Rp250.000)
= Rp250.000 - Rp50.000
= Rp200.000

Total Kemeja dan Jeans
= Rp210.000 + Rp200.000
= Rp410.000

Maaf klo salah

Pak Koko membayar =
(2 x 150.000 x (100-30)%) + (250.000 x (100-20)%)
= (300.000 x 70%) + (250.000 x 80%)
= 210.000 + 200.000
= 410.000
jawaban : b