So first divide 2666 by 2 because there are two people and your trying to find out how many hits they both have. So after you divide should get 1333. Then add 276, and you should get 1609. So Pedro had 1609 hits and Ricky got 1057 hits. What you do to find Rickys is 2666-1609 and you get 1057.
Hope this helps :)