Correct Answer - Option 1 : 5
Given:
Average of 15 numbers = 35
Concept used:
Sum of observations = Average × Number of observations
Calculation:
Sum of 15 numbers = 35 × 15
⇒ 525
Each number divided by 7
The sum of numbers divided by 7 = 525 ÷ 7
The average of 15 numbers = 525/(15
× 7)
⇒ 5
∴ The required average is 5