# If the Sum of a Few Numbers is 450 and Their Mean is 50 If Another Number 100 is Included, the Mean Would Become - Mathematics

MCQ

If the sum of a few numbers is 450 and their mean is 50 if another number 100 is included, the mean would become

#### Options

• 55

• 60

• 75

• None of these

#### Solution

55
Explanation:
Let number of numbers = x

Then, 50 =450/x

⇒         x=450/50=9

New mean=(9xx50+100)/10 = 550/10=55

Concept: Average and Age
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