The average of five consecutive multiples of 5 is 20. What is the largest of these numbers?

llm

Answered on Tue Feb 22 2022

Let the first number is x

then next four consecutive numbers will be x+5, x+10, x +15, x+20 respectively.

We have, average = 20

We know, Average = Sum of numbers/ total numbers

20 = (x+ x+5 + x+10 + x +15 + x+20)/ 5

Cross-multiplying, we get

100 = 5x +50

5x = 100-50

5x = 50

x =50/5

x = 10

Then , the numbers will be 10,15,20,25,30

Here, the largest number in 30.