Question

half of a number addede to 10 gives 20. fund the number.
​

Answer 1

Let the unknown number be 'x'

Given:-

Half of a number addede to 10 gives 20

TO FIND :- x

SOLUTION :-

In the Left Hand Side (LHS)

Half of the number x is x/2.

It is stated that it is added to 10

=> x/2 + 10

It is requal to 20 [ Right Handside] [RHS]

Now we can easily form the linear equation in one variable ,

$\frac{x}{2} + 10 = 20 \\ \\ \\ \implies \frac{x}{2} = 20 - 10 \\ \\ \\ \implies \frac{x}{2} = 10 \\ \\ \\ \implies x = 10 \times 2 \\ \\ \\ \implies \boxed{x = 20}$

Therefore the unknown number is 20.

Answer 2

Let Number=x

Half Of Number=x÷2=x/2

Half of Number added to 10 gives 20.

A/Q

$\frac{x}{2} + 10 = 20 \\ \\ \frac{x}{2} = 20 - 10 \\ \\ \frac{x}{2} = 10 \\ \\ x = 10 \times 2 \\ \\ x = 20$

We got X=20

CHECK

Number=20

Half of 20 =20÷2=20/2=10

Added to 10

10+10=20

Hence,RHS=20

LHS=20

LHS=RHS

$\boxed{\mathbf{\huge{Number=20}}}$