Question

The average of 5 consecutive number is n. If the next two consecutive numbers are also included, then the average will .....

• A. remains same
• B. increase by 1.5
• C. increase by 1
• D. increase by 1.4

Answer 1

Answer:

C. increase by 1

Let the 5 consecutive numbers be x, x+1, x+2, x+3, x+4 Average= (5x+10)/5= x+2=n Average of 7 consecutive numbers = (7x+21)/7= x+3=n+1 i.e, the average is increased by 1