Tolong jawab pertanyaan soal mtk saya bsok dikumpul

1)
25.000 : 25% × 1/5
= 25.000 × 100/25 × 1/5
= 20.000

Jadi seperlima uang Amir adalah Rp 20.000,00

2)
......................Penjualan - Pembelian
%Untung=------------------------------ × 100%
...................................Pembelian

.......................125.000 - 100.000
% Untung = ----------------------------- × 100%
...................................100.000

.........................25.000
% Untung = --------------- × 100%
..........................100.000

% Untung = 25%

Jadi persentase untungnya adalah 25%

3)

.......................Pembelian - Penjualan
%Kerugian=----------------------------- × 100%
....................................Pembelian

........................150.000 - 130.000
% Kerugian=----------------------------- × 100%
..................................150.000

..........................20.000
% Kerugian = ------------- × 100%
...........................150.000

% Kerugian = 13 1/3%

Jadi persentase kerugian adalah 13 1/3%