Respuesta :
100-20=80%
percent means parst out of 100
80%=80/100=8/10=4/5
60=80% of original
60=4/5 of original
times both sides by 5/4
300/4=original
75=original
regular price is $75
percent means parst out of 100
80%=80/100=8/10=4/5
60=80% of original
60=4/5 of original
times both sides by 5/4
300/4=original
75=original
regular price is $75