Lizzy: Isabella and Alexis went to the mall to buy some pants and dresses. Alexis bought 3 times more pants and dresses than Isabella. If Alexis bought 21 pairs of pants and 18 dresses, how many pairs of pants and dresses did Isabella buy in total?.
Me: Hmmm, let me think. I think this is the detailed solution:
user
The number of pants Isabella bought is 21 / 3 = 7 pairs of pants. The number of dresses Isabella bought is 18 / 3 = 6 dresses. The total number of pants and dresses Isabella bought is 7 + 6 = 13. Final answer: 13.
assistant