Question

The sum of three consecutive numbers is 90. Find the numbers

Answer 1

Answer:

x = 29, (x+1) = 30 (x + 2) = 31

Step-by-step explanation:

We will need some algebra to help solve this question.

Let the first of the three numbers be (x), then the numbers are (x), (x+1) and (x+2) as they are consecutive.

Then:

(x) + (x+1) + (x+2) = 90

Expand:

3x + 3 = 90

Subtract 3 from both sides:

3x = 87

Divide both sides by 3:

x = 29

Then (x+1) = 30 and (x+2) = 31

Answer 2

Answer:

Let 1st consecutive number be X

then 2nd number be x+1

ans third number be x+2

According to question

x+(x+1)+(x+2) = 90

x+x+1+x+1 = 90

3x+2 = 90

3x = 90-2

3x = 87

x = 87/3

x = 29

1st number = 29

2nd number = x+1 = 29+1 = 30

3rd number = x+2 = 29+2 = 31

therefore number is 29 , 30 , 31

Step-by-step explanation:

Verification

x+x+1x+2 = 90

so 29+30+31 = 90