numerar in economie+banii de cont=masa monetara
[tex]8000\ mld+\frac{75}{100} \times x=x[/tex]
[tex]8000\ mld=x-\frac{75x}{100} \\\\8000\ mld=\frac{25x}{100}\\\\ x=4\times 8000\ mld= 32000 \ mld\\\\banii\ din\ cont=\frac{75}{100} \times32000\ mld=24000\ mld[/tex]
Masa monetara= 32 000 mld u.m
Banii din cont= 24 000 mld u.m