Out of 6 numbers, the sum of the first 5

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Average

Question:

Out of 6 numbers, the sum of the first 5 numbers is 11 times the 6th number. If their average is 144 then the 6th number is?

Options:

104

Correct Answer:

Explanation:

Let 6th number = x

sum of 5 numbers = 11x

\(\frac{11x + x}{6}\) = 144

⇒ 12 x = 144 × 6

x = 72