Question

The average of 12 numbers is 18. Find the new average when
A. The average of first 10 numbers is 20
B. Each number is multiplied by 6.

• A. The data in statement A alone is sufficient to answer the question.
• B. The data in statement B alone is sufficient to answer the question
• C. The data either in statement A alone or in statement B alone is sufficient to answer the question
• D. The data given in both statements A and B together are not sufficient to answer the question.
• E. The data in both statements A and B together are necessary to answer the question.

Answer 1

The correct option is B The data in statement B alone is sufficient to answer the question

From statement A, we get
Sum of the first 10 numbers $=10\times 20=200$ .... (i)
Statement A is not sufficient to get the required answer
From statement B, we get new average
$=(18\times 6)=108$ .... (ii)
Statement B alone is sufficient to get the required answer.