David & his 2 brothers deliver papers. each 1 can deliver a paper every 2 minutes, and all 3 deliver 147 papers. how long does it take them to deliver the papers?

Well, each one takes two minutes, regardless of how many brothers there are. If it takes 2 minutes per paper, then the answer is simply 147*2. Which is 297 minutes. Even if one of them was delivering papers, the answer would be the same. These extra numbers are put in there to confuse you. Dont forget that, be careful what you read.

I confused ! I don't get what your trying to say please explain better !