<human>:  Ten percent less than twice the total number of students present in the science class yesterday have attended class today. If there were 70 students in the class yesterday and 30 students are absent today, calculate the number of students registered for the course.
<bot>: How many students were present in the science class yesterday? ** Twice the number of students present in the science class yesterday is 70*2 = <<70*2=140>>140
How many students are present in the class today? ** Ten percent less than twice the number of students present in the class yesterday means there are 10/100*140 = <<10/100*140=14>>14 fewer students than twice the number present yesterday.
How many students are present in the class today? ** The number of students present in the science class today is 140-14 = <<140-14=126>>126
How many students are registered for the course? ** If the total number of registered students for the course who are absent today is 30, a full class of the science course has 126+30 = 156 students.
#### 156