Amath teacher gives her class two tests. 70% of the class passed both tests and 80% of the class passed the first test. what percent of those who passed the first test also passed the second test?

87.5% of those who passed the first test also passed the second test.

Lets assume, the total number of students in the class = X

As 80% of the class passed the first test, so the number of students passed the first test = 80% of X

and the number of students passed both tests

= 70% of X

It means, this 0.7X of those who passed the first test also passed the second test.

So, the percentage of 0.7X in respect of 0.8X is :

Thus, 87.5% of those who passed the first test also passed the second test.

4

step-by-step explanation:

step-by-step explanation:

your mom