Latonya sent and received 600 emails. she sent 487 emails. how many emails did Latonya receive?

Question

The answer I have to check my daughters math packet does not add up to what she or I get

 

Answer 1

If the total amount of emails whether sent or received was 600 and we know the exact amount of emails sent was 487. Then the amount of emails she received would be the remainder 600 - 487 = 113