Stefan, Vail, and Aiguo collected seashells. Stefan had 16 more seashells than Vail. Vail had 5 less than Aiguo. Aiguo had 20 seashells. How many seashells did the 3 children have in total?
Thoughts? Step-by-step reasoning:
Aiguo = 20 shells. Vail = 20 - 5 = 15 shells. Stefan = 15 + 16 = 31 shells. Total = 20 + 15 + 31 = 66. The 3 children had 66 seashells altogether.
Thus, the answer is 66.