By looking at the tables, both equal 20 when adding all values for each table. Now divide 2000 by 20, we would get 100. Take the 6 and multiply it by 100 giving us 600. Then do the same for the 5 and we have 600 and 500. Now we need to average them. Add both and we have 1100 and then divide it by 2 since we added 2 values and we would get 550. Hope this Helps!
If a question has four possible answers, and you are strictly guessing regarding which of them is correct, then the chances of your choosing the correct one from the four is 1 in 4, or 0.25.
