Jimmy's father receives 20 emails a day. Halfway through April, he subscribed to a news channel that sent 5 more emails per day to his email. What's the total number of emails Jimmy's father had at the end of the month?
April has thirty days, so half will be 30 / 2 = <<30/2=15>>15.
For the first 15 days, he received 20 * 15 = <<20*15=300>>300 emails.
For the remaining 15 days, the number of emails increased to 20 + 5 = 25 emails.
The total number of emails for the remaining days of the month is 25 * 15 = <<25*15=375>>375 emails.
The total number of emails for April is 375 + 300 = <<375+300=675>>675 emails.
#### 675