I have to take a placement test for math for school. The problem is that I haven't done any math in 2 years so my mind is a little rusty. These simple questions are stumping me.
How do you solve a problem that asks you:
1) what value of x solves the following proportion?
I thought the answer would be 11, but it apparently is 12. How do you go about getting the proper answer?
A total of 50 juniors and seniors were given a mathematics test. the 35 juniors attained an average score of 80 while the 15 seniors attained an average/ of 70. what was the average score for all 50 students who took the test?
I am so lost at how to figure this out.
any help will be greatly appreciated!