Jack received 38 emails and sent 11 letters in the morning. He then received 2 emails and sent 40 letters in the afternoon. How many emails did Jack receive in the day?
In the morning, Jack received 38 emails and sent 11 letters. 
In the afternoon, Jack received 2 more emails and sent 40 more letters. 

So, Jack received a total of 40 emails in the day.