Răspuns :
557,998 Deoarece faci proportie:
100%.........2789,99
20%........... x
de unde x= 2789,99* 20 %/ 100% si x=557,998
100%.........2789,99
20%........... x
de unde x= 2789,99* 20 %/ 100% si x=557,998
2789,99 reprezinta 100 de procete
x reprezinta 20 de procente
2789,99/x=100 de procente/20 de procente
x=2789,99*20/100
x=55799,8/100
x=557,998
x reprezinta 20 de procente
2789,99/x=100 de procente/20 de procente
x=2789,99*20/100
x=55799,8/100
x=557,998