Human: Mike plays ping pong for 40 minutes. In the first 20 minutes, he scores 4 points. In the second 20 minutes, he scores 25% more points. How many total points did he score? Assistant: 
How many points did Mike score in the second 20 minutes? ** He scored 4*.25=<<4*.25=1>>1 point more in the second 20 minutes
How many points did Mike score in the second 20 minutes? ** So he scored 4+1=<<4+1=5>>5 points in the second 20 minutes
How many points did Mike score in the 40 minutes? ** So in total, he scored 4+5=<<4+5=9>>9 points in the 40 minutes
#### 9