How To Find The Average: Mean

The mean, or average, of 4.5 and 7.3?

okay, so if i got 50% 79% 67% 65% 64% and 63% on my tests what would my mark be?

Linda's score on five tests are 84, 80, 76, 96, and 80. What must Linda score on the sixth test so that her average will be 85?

I look at these kind of problems as "what divided by 5 equals 80". So I multiply 5 by 80 to get 400. I then subtract the points you already have from 400 to see what you need to get on your next test. i.e. 400 minus 301 equals 99. Hope this helps.

On the off chance that you still care about the answer it's 99. The equation requires some algebra. It's: (301+X)/5 = 80. 301 is the total score of your previous tests, X is the score of the 5th test you wanted to know, and dividing it by 5 is the amount of total tests taken with 80 being the desired average. It might make more sense if someone showed it to you in person. There are other ways of finding the answer but they require a grasp of fractions and decimals. Post again if you would like a clearer example or alternative methods.

How do you find the mean for this problem: If you score a 65,73,81, and 82 on four 100-point tests, what score do you need on another 100-point test to get on average of 80? I'm extremly confused

very very very very good exzaple