The average of eight numbers is 6. If each number is multiplied by 5, then the average of the new set of numbers is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 30
When every number of a set is multiplied by the same number, the sum and hence the average are multiplied by it too.
Sum of the eight numbers \(=8\times6=48\)
New sum \(=48\times5=240\)
New average \(=240\div8=30\), that is, \(6\times5\)