Question

At a college, the scores on the chemistry exam were as follows: 25% of the students scored an A, 30% scored a B, 35% scored a C, and 10% failed. What was the percentage of students who passed the exam?

a) 90%
b) 65%
c) 60%
d) 75%

Answer 1

To calculate the percentage of students who passed the exam, add the percentages of students with grades A (25%), B (30%), and C (35%), which totals to 90%. Therefore, 90% of the students passed the exam.

Step-by-step explanation:

The question asked is, 'What was the percentage of students who passed the exam?' given the distribution of grades: 25% A, 30% B, 35% C, and 10% failed. To find the percentage of students who passed, we simply add up the percentages of students who received an A, B, or C, since all these grades are passing grades.

• Percent who scored an A: 25%
• Percent who scored a B: 30%
• Percent who scored a C: 35%

By adding these percentages, we get 25% + 30% + 35% which equals to 90%. Thus, 90% of the students passed the exam, which corresponds to option (a).