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

Answer:

given 3 scores already and we need to find the fourth such that he passes the average score of 50

let x be the score to be determined ⇔ $50=\frac{43+48+42+x}{4}$⇒

$50=\frac{133+x}{4}$⇒

$200=133+x$⇒

$67=x$

∴ the score should be 67

Step-by-step explanation: