There are two charging standards for a communication company in a certain place: ① Monthly rent is 18 yuan, and the call fee is 0.12 yuan per minute; ② There is no monthly rent, and the call fee is 0.22 yuan per minute. If Uncle Wang has 150 minutes of talk time per month, which one should you choose? Standard is cheaper? (Calculated to explain the reason)
某地通信公司的收费标准有两种：①月租18元，通话费每分钟0.12元；②无月租，通话费每分钟0.22元，如果王叔叔每月通话时间为150分钟，选择哪种标准比较省钱？(通过计算说明理由)
<result>150</result>