Question

the sum of three consicutive number is 18 find the smallest number :-
a) 5
b) 6
c) 7

Answer 1

Answer:

a)5

Step-by-step explanation:

Let the smallest number be x

Concecutive numbers are x+1, x+2

x + x+1 + x+2 = 18

3x + 3 = 18

3x = 15

x = 5

∴ The smallest number is 5

Answer 2

$\sf\huge\underline\red{ \dag \: Answer \: \dag}$

Let's say, that three consecutive numbers are x, (x + 1) & (x + 2) respectively.

According to the question :-

The sum of the three consecutive numbers (x, x + 1 and x + 2) is 18.

➺ x + x + 1 + x + 2 = 18

➺ 3x + 3 = 18

➺ 3x = 18 - 3

➺ 3x = 15

➺ x = 15/3

➺ x = 5

Therefore,

First no. x = 5

Second no. (x + 1) = (5 + 1) = 6

Third no. (x + 2) = (5 + 2) = 7

∴ Hence, the required consecutive numbers are 5, 6 and 7 respectively.

Option (a) is correct as 5 is the smallest number.