Question

1
The sum of five consecutive numbers
is 20. What is the sum of first three
consecutive numbers ?​

Answer 1

Answer:

2+3+4=9

Step-by-step explanation:

Let the first consecutive number be x Then rest of the numbers are (x+1),(x+2),(x+3),(x+4).

Then x+x+1+x+2+x+3=20

   5x+10=20

   5x=10

   x=2

Firs three numbers 2(x),3(x+1),4 (x+2)

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Answer 2

Step-by-step explanation:

Given:-

The sum of five consecutive numbers is 20.

To find:-

What is the sum of first three consecutive numbers ?

Solution:-

Let the five consecutive numbers are x,x+1,x+2,x+3,x+4

Their sum=x+x+1+x+2+x+3+x+4=5x+10

According to the given problem

Their sum=20

=>5x+10=20

=>5x=20-10

=>5x=10

=>x=10/5

=>x=2

x+1=2+1=3

x+2=2+2=4

x+3=2+3=5

x+4=2+4=6

The five consecutive numbers =2,3,4,5,6

The sum of first three consecutive numbers=

2+3+4=9

Answer:-

The sum of first three consecutive numbers=9