bantu dijawab ya kak nomor 2-4

2.)-
3.)100%/100%+25%×180.000
=100%/125%×180.000
=4/5×180.000
=114.400
4.)100%/100%-20%×400.000
=100%/80%×400.000
=5/4×400.000
=500.000
#maaf kalau salah
#semoga membantu