Respuesta :
80% of $72, you turn 80% into a decimal .8 and then multiply by $72 which is $57.60
She made $72 this week but its %80 of than last week
So we found what is %80 of $72 and we subtract the result from $72 and that gives us the difference between last week and this week and we add it to $72 for find it it gives us 86.4