Question

the sum of five consecutive numbers is 100. find the first number​

Answer 1

Answer: 18

Step-by-step explanation:

5x=100-10

5x=90

x=90/5

x=18

Nos are 18,19,20,21,22

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Answer 2

Given,

The sum of five consecutive numbers is 100.

To Find,

The first number =?

Solution,

We can solve the question as follows:

It is given that the sum of five consecutive numbers is 100. We have to find the first number.

Let the first number be x. Then, the next four numbers will be (x + 1), (x + 2), (x + 3) and (x + 4) since they are consecutive.

Now,

The sum of x, (x + 1), (x + 2), (x + 3) and (x + 4) is equal to 100.

$x + (x + 1) + (x + 2) + (x + 3) + (x + 4) = 100$

Solving the above equation to find the value of x,

$5x + 10 = 100$

$5x = 90$

$x = \frac{90}{5} = 18$

Hence, the first number is 18.