Current location - Training Enrollment Network - Mathematics courses - It is known that three students in class 62 failed in the math exam passed, of which 10% was excellent and 60% was excellent. How many people are there in Class 62?
It is known that three students in class 62 failed in the math exam passed, of which 10% was excellent and 60% was excellent. How many people are there in Class 62?
According to the meaning of the question:

Number of people who failed+number of people who passed+number of outstanding people = total number of people.

Percentage of failing+passing+excellent = 1.

Because 10% passed% excellent, 1- 10%-60%=30% failed, there are three people, so let the total number be x, that is:

30%x=3

D: x= 100 people.