NA 2000 kibiców tylko 8 kupiło najdroższe bilety. Ile promili wszystkich kibiców stanowili kibice z najdroższymi biletami.??
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2000-100%
8 - x
x=8*100%/2000=800%/2000=8/20%=40/100=0.4%
0.4% to 4 promile
Odp. 4 promile to kibice z najdroższymi biletami.
2000 - 1000 promil
2000:1000=2
1 promil - 2 osoby
8:2=4
Odp: Stanowili 4 promile
prosze o naj!