Pak samsul membeli sepeda motor seharga rp.13.500.000.00 .harga jual kemudian sepeda motor mengalami penurunan 20% stiap tahunya .berapa hrga jual sepeda motor

misal harga beli = 100%
harga jual = 100% - 20% = 80%

th 1
= 80% × 13.500.000
= 10.800.000

th 2
= 80% × 10.800.000
= 8.640.000

th 3
= 80% × 8.640.000
= 6.912.000

th 4
= 80% × 6.912.000
= 5.529.600

th 5
= 80% × 5.529.600
= 3.423.680

jadi harga jual setelah 5 th pemakaian = Rp 3.423.680