160 students took part in a competition. Each student must obtain at least a certain score In the first round to qualify for the second round. The table shows the number of students for each score. 30% of the students did not qualify for the second round. From the table, what is the lowest score of a student who qualified for the second round? (2 marks)
Answer: 3 points
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"30% of the students did not qualify for the second round."
students did not qualify (30%) → 160 x 30% = 48
to get 48 students
13 (0 points) + 15 (1 point) + 20 (2 points) = 48
which means that the lowest score to go to the second round is 3 points