human
Sarah buys 20 pencils on Monday. Then she buys 18 more pencils on Tuesday. On Wednesday she buys triple the number of pencils she did on Tuesday. How many pencils does she have?
assistant
How many pencils does Sarah have on Tuesday? ** By adding together Monday and Tuesday, Saah has 20+18= <<20+18=38>>38 pencils
How many pencils does Sarah buy on Wednesday? ** On Wednesday, she buys 3 * 18= <<3*18=54>>54 pencils
How many pencils does Sarah have in total? ** All together, Sarah has 38+54= <<38+54=92>>92 pencils
#### 92