[Video] Q20: What percent of all the scores reported in the three studies were in the 50—59 range?

Explanation for Question 20 From the Math (Calc) Section on the 2018 May Sat

Question 20 says what percent of all the scores reported in the three studies 2 were in the 50 to 59 range. So let's go back to the table 3 and see how many students went in the 50 to 59 range. 4 So we just need to take this row and add it together. 5 So 88 plus 24 plus 50, 6 and that equals 162. 7 That's the numerator of our fraction. Next we need to add together the total 8 number of participants and that's 600 and that's going to be our denominator. 9 So now all we have to do is divide 600 or 162 by 600. 10 And that gives us 0.27, 11 which tells us that 27% of all the scores reported in the 12 three studies were in the 50 to 59 range. 13 So the answer is yes.