<human>:  At Mario's barbershop haircuts are 50% more expensive during the weekends. If Mario paid $18 for his last haircut on Monday, how much he would have paid the day before?
<bot>: How much would Mario's haircut have been on Sunday? ** Mario's $18 cut on Monday would have been 50% more expensive on Sunday or $18*50% = $<<18*50*.01=9>>9 more expensive
How much would Mario have paid on Sunday? ** That means he would have paid $9 more on Sunday than what he paid ($18) on Monday or $9+$18 = $<<9+18=27>>27
#### 27