[Video] Q28: Based on the table and passage, which choice gives the correct percentages of the purines in yeast dna?

Answer Choices

  • 17.1% and 18.7%

  • 17.1% and 32.9%

  • 18.7% and 31.3%

  • 31.3% and 32.9%

Explanation for Question 28 From the Reading Section on the Official Sat Practice Test 1

Okay. So now is when we actually start looking at the table. 2 So it says based on the table, which choice and the passage you have 3 to use the passage to which choice gives the correct percentages of hearings and 4 use DNA. So I'm going to go to the table. 5 We see where we have a yeast. Now I'm not sure which of these 6 are considered periods. I'm going to go back to the passage and I'm going 7 to find this line right here, tells me that adenine and guanine 8 are periods. So we're going to circle these two and we're going to look 9 at these concentrations. So the concentration that we have here for yeast are 31.3 10 and 18.7. Um, 11 so we're looking for 31.3 and 18.7. 12 That is letter C. So there you have it, it was that easy. 13 You had to use a passage to figure out which were the periods. 14 And then you just go back into the graph to figure out the actual 15 percentage numbers. Um, so that's how you do it.

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