Question

A Math professor scores all tests with a maximum of 100 points. A student must have an average of 90 on six tests to receive an "A" in the course. The student receives 75, 85, 90, 95, and 94 on five tests. Is it possible for the student get an "A" grade?

Answer 1

No, he cannot

Explanation:

Lets say the student takes the maximum socre on his last test, so he gets 100. Now, his average on the six texts will be:

(75+85+90+95+94+100)/6 = 89.83

So, if taking 100 is not enough to get to the average of 90, this means he would need a score greater than 100, which is impossible as 100 is the maximum. So, the student CAN'T get an A