Mark hires a singer for 3 hours at $15 an hour.  He then tips the singer 20%.  How much did he pay?
Марк барои 3 соат як овозхонро бо нархи 15 доллар дар соат киро мекунад. Сипас, ӯ ба овозхон 20% нағда медиҳад. Ӯ чанд пул пардохт кард?
How much did the singer cost? ** The cost was 15*3=$<<15*3=45>>45
How much did the singer tip? ** So the tip was 45*.2=$<<45*.2=9>>9
How much did he pay? ** So in total, he paid 45+9=$<<45+9=54>>54
#### 54
How much did the singer cost? ** The cost was 15*3=$<<15*3=45>>45  
How much did the singer tip? ** So the tip was 45*.2=$<<45*.2=9>>9  
How much did he pay? ** So in total, he paid 45+9=$<<45+9=54>>54  
#### 54