Did it send as text message or iMessage?

I have an iPhone and an iPad and iMessage is set up on both and synced together.sometimes when I send a message on my phone it comes up as sent as text message and then when I go onto my iPad for the same text it's sent as an iMessage and says delivered under it. Did the person get the same thing twice or which actually went through?

Added (1). I have the same apple ID but I have an email address and my phone number. So it deffo didn't send twice but was a text message then?

Do you have the same apple ID because if you do you get the same things on your phone you could get all your apps on both devices Also it didn't send twice beacause you have the same apple ID