p k s s ð ⊅ ɑ: g k g 3: g

b.

program ct;
uses crt;
var x:Qword;
    a:real;
begin
    clrscr;
    writeln('Nhap so tien 1 thang bo Phan phai chi den mua xang la (VNĐ): '); readln(x);
    a:=x/175000;
    writeln('So tien bo Phan phai chi them khi gia xang tang la ',a*190000-x:5:0,'đ');
    readln;
end.

a.

(Hình nhé!!!)

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10 điểm!!!