Question

The average of numbers N₁ and N₂ is 17. The average of numbers N₂ and N₃ is 44. What is the difference between N₃ and N₁?

• A. 54
• B. 35
• C. 27
• D. 36

Answer 1

Answer:

A. 54

Solution:

GIVEN:

Average of N₁ and N₂ = 17

Average of N₂ and N₃ = 44

CONCEPT:

Basic Average concept.

FORMULA:

Average = Sum of numbers/Total Numbers

CALCULATION:

⇒ N₁ + N₂ = 34     --- (i)

⇒ N₂ + N₃ = 88     --- (ii)

Subtracting (i) from (ii)

⇒ N₂ + N₃ - N₁ - N₂ = 88-34

⇒ N₃ - N1 = 54.

∴ the difference between N₃ and N₁ is 54