Ateacher gave his class two quizzes; 80% of the class passed the first quiz, but only 60% of the class passed both quizzes. determine the percentage of students who passed the first quiz that also passed the second quiz.

The answer is 75%.

Step-by-step explanation:

Let x be the total number of students in the class.

As given - 80% of the class passed the first quiz, so it can be represented as

And only 60% of the class passed the second quiz, that is represented as

So, to determine the percentage of students who passed the first quiz that also passed the second quiz, we will do the following:

Therefore, 75% students passed the first quiz and also passed the second quiz.

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

26

step-by-step explanation: