Question

Karen has scored 28, 27, and 25 points in her three basketball games so far. How many points does she need to score in her next game so that her average (mean) is 27 points per game?

Answer 1

Average = total 4 games/ 4

@saracanada Can you plug the numbers in?

Answer 2

i don't know??

Answer 3

What's the average?

Answer 4

27

Answer 5

Yes, then what is the 3 scores?

Answer 6

*are

Answer 7

28, 27, and 25

Answer 8

The fourth score is x!

Answer 9

What's the total of 3 scores?

Answer 10

80

Answer 11

Now plug into the formula:
Average = total 4 games/ 4

Answer 12

20

Answer 13

or
4 * 27 = 80 + x
Can you find x?

Answer 14

108

Answer 15

Why don't you write into the equation, instead of giving one by one random number?

Answer 16

4*27=108
108+80=1.35

Answer 17

Because you don't learn to plug into the equation, your result is wrong:
4 * 27 = 80 + x
108 - 80 = x

Answer 18

108-80=28

Answer 19

Your goal is find x ( the fourth score), then x needs to be in the equation:
4 Average = total 4 games
4 * 27 = 80 + x
108 - 80 = x
Thus x = 28
Learn to write algebra properly, will you :/

Answer 20

thank u i will study hard

Answer 21

It's just 2 lines of plugging to the formula :)