The average of three numbers is 15 . The

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

The average of three numbers is 15 . The average of the second and the third number is 12.5 . What is the first number?

Options:

Correct Answer:

Explanation:

Sum of three numbers = 15 x 3 = 45

Sum of 2nd and third number= 12.5 x 2 = 25

First number = 45 - 25 = 20