Question

Olga collected 13 seashells and Katrin collected 4 shells. How many total shells did Olga and Katrin collect all together?​

Answer 1

17

Explanation:

If Olga collected 13 and Katrin 4, to "collect all together " means to get the sum, so you add 13+4 hence giving you 17

Answer 2

17 seashells

Explanation:

13+4=17

I hope this works :)