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A class of students took a test with 50 questions. The average mark of the class is 30. If there are 20 students in the class, what will be the total number of marks earned by the class?

300
700
600
500​

Respuesta :

Answer:

total marks = 600

Step-by-step explanation:

The average of a data set is calculated as

average = [tex]\frac{sum}{count}[/tex]

given there 20 students, then count is 20 and average is 30, then

[tex]\frac{sum}{20}[/tex] = 30 ( multiply both sides by 20 )

sum = 20 × 30 = 600

the total marks earned by the class is 600

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