There are 32 consecutive natural numbers. The average of the first 13 numbers is x. What is the average of the next 19 numbers? |
x + 15 x + 16 x + 17 x + 18 |
x + 16 |
Sum of first 32 consecutive numbers = \(\frac{n(n+1)}{2}\) = \(\frac{32 × 33}{2}\) = 528 Average of first 13 numbers = \(\frac(n+1)}{2}\) = \(\frac{14}{2}\) = 7 so x = 7 Sum of 13 numbers = 13 × 7 = 91 Remaining sum of 19 numbers = 528 - 91 = 437 Average of 19 numbers = \(\frac{437}{19}\) = 23 23 = 7 + 17 = x + 16 SO , ans is x + 16 |