Question

Sum of a number and it's half is 30 then the number is​

Answer 1

Answer:

If the sum of a number and its half is 30, then the number is 20

Step-by-step explanation:

Let X be the given number.

Then, given that

$X+\frac{X}{2} = 30\\\\\frac{2X+X}{2} =30\\\\3X= 30*2\\\\3X= 60\\\\X=\frac{60}{3} \\\\=20$

Therefore the number is 20

Answer 2

Given: The sum of a number and its half is$30$.

We have to find the number.

• By using the concept of equation shifting, we are solving the above  equation.
• For this, we will separate the variables on one side and the constant on  another side.  
• Then, we will simplify the equation.  

We are solving in the following way:

Let assume the number will be$x$.

From the given statement we can write:

$\Rightarrow x+\frac{x}{2} =30\\\\\Rightarrow \frac{2x+x}{2} =30\\\\\Rightarrow3x=30\times2\\\\\Rightarrow 3x=60\\\\\Rightarrow x=\frac{60}{3}$

Solving the above equation further we get,

$\Rightarrow x=20$

Hence, the number will be$20$.