Question

Sam scored 43, 48, and 42 points on three tests. How many points should he get on the fourth test to get an average score of 50?

Answer 1

(43+48+42+x) divided by 4 = 50

Answer 2

multiply each side of the equation by 4

Answer 3

43+48+42+x=200

Answer 4

then add like terms

Answer 5

133+x=200

Answer 6

then subtract 133 from both sides

Answer 7

i still lost

Answer 8

to get x=67

Answer 9

\[50=43+48+42+x/4\]